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book article

Analysis of trace elements in sewage sludgesViisimaa, Ludmilla; Lepane, Viia; Viitak, Anu; Viisimaa, MattiISM '92 : 12-th International Symposium on Microchemical Techniques, Cordoba, Spain, 6-11 Sept. 19921992

book article

2

journal article

Cadmium and mercury balance for fertilizer production and usage in EstoniaViisimaa, LudmillaTallinna Tehnikaülikooli Toimetised1994 / lk. 57-66: ill

journal article

3

journal article

Chemical interaction of copper sulfate with calcium dihydrophosphateViisimaa, Ludmilla; Vilbok, HeinrichPhosphorus, sulfur and silicon and the related elements1990 / p. 446

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4

book article

Chemical interaction of copper sulfate with calcium dihydrophosphateViisimaa, Ludmilla; Vilbok, HeinrichXI. International Conference on Phosphorus Chemistry, Tallinn, USSR July 3-7, 1989 : abstracts of posters. II1989 / [p. 93] https://www.ester.ee/record=b1209881*est

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5

journal article

A coagulant for water purification from Estonian glauconiteKudrjavtseva, Jelena; Viisimaa, Ludmilla; Kuusik, Rein, keemikEesti Teaduste Akadeemia Toimetised. Keemia1994 / lk. 68-76: ill

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6

journal article

Differential thermal analysis for estimation of the thermal stability of NPK fertilizersTõnsuaadu, Kaia; Viisimaa, LudmillaJournal of thermal analysis1991 / p. 927-934: ill https://doi.org/10.1007/BF01932790

journal article

7

book article

Differential-thermal analysis for estimating the thermal stability of the NPK-fertilizersViisimaa, Ludmilla; Tõnsuaadu, KaiaEuroanalysis VII : European Conference on Analytical Chemistry, Vienna, Austria, August 26-31 1990 : book of abstracts. Vol. 21990 / p. B7 P-Fr-106

book article

8

book article

Distribution and recovery of rare earths from Estonian phosphorites during acidic decompositionViisimaa, Ludmilla; Veiderma, Mihkel; Aarnio, P.; Niinistö, LauriSymposium on Inorganic and Analytical Chemistry : May 27, 1988 Lappeenranta1988 / p. 115-117

book article

9

journal article

Estonian glauconite : a resource for the futureKuusik, Rein, keemik; Aasamäe, Ernst; Viisimaa, LudmillaKemia-Kemi1998 / 5, p. 404-406: ill

journal article

10

book article

Faaside lahutamine glaukoniidi happelisel töötlemiselViisimaa, Ludmilla; Kuusik, Rein, keemikXXIII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid1997 / lk. 158

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11

book article

Koagulandi saamine glaukoniidist = Obtaining coagulant from glauconiteKuusik, Rein, keemik; Viisimaa, Ludmilla; Aasamäe, ErnstXVII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 17th Estonian Chemistry Days : abstracts of scientific conference1996 / lk. 89-90 https://www.ester.ee/record=b1070511*est

book article

12

book article

Liquid coagulant for water purification from glauconiteKuusik, Rein, keemik; Viisimaa, Ludmilla; Aasamäe, ErnstKemia 94 : Finnish Chemical Congress and Exhibition, Helsinki, 8.-10.11.1994 : abstracts1994 / p. 36

book article

13

journal article

Mikrokomponendid fosfaattoormes ja väetistesVeiderma, Mihkel; Viisimaa, LudmillaEesti Loodus : populaarteaduslik ajakiri1989 / lk. 766-772 : ill https://www.ester.ee/record=b1072059*est https://www.digar.ee/viewer/et/nlib-digar:340970/298435/page/16 https://artiklid.elnet.ee/record=b2300566*est

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14

journal article

A new dual coagulant for water purificationKuusik, Rein, keemik; Viisimaa, LudmillaWater research1999 / 9, p. 2075-2082: ill

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15

journal article

Occurrence of heavy metals in phosphate fertilizers and industrial wastesViisimaa, Ludmilla; Hödrejärv, Helvi; Kuusik, Rein, keemik; Berezin, GrigoriKemia-kemi = [Finnish chemistry]1991 / p. 970-971 https://www.ester.ee/record=b1201067*est

journal article

16

journal article

Refined coagulant for water purification from Estonian glauconite. 1, Digesting glauconite with sulphuric acid in slurriesKuusik, Rein, keemik; Viisimaa, Ludmilla; Aasamäe, ErnstProceedings of the Estonian Academy of Sciences. Chemistry1996 / 1/2, p. 42-55

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17

journal article

Refined coagulant for water purification from Estonian glauconite. 2, Characteristics of the products and solid wastesKuusik, Rein, keemik; Viisimaa, Ludmilla; Aasamäe, ErnstProceedings of the Estonian Academy of Sciences. Chemistry1996 / 1/2, p. 56-69

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18

book article

Separation of phases by acidic treatment of glaukoniteViisimaa, Ludmilla; Kuusik, Rein, keemik23rd Estonian Chemistry Days : abstracts of scientific conference1997 / p. 166

book article

19

journal article

Some chemical characteristics of sewage sludges in EstoniaViisimaa, Ludmilla; Lepane, Viia; Viitak, Anu; Viisimaa, MattiTallinna Tehnikaülikooli Toimetised1994 / lk. 68-80

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20

book

Teadustegevus1993 https://www.ester.ee/record=b1053752*est

book

21

book article

Trace chemistry in processing phosphate rockVeiderma, Mihkel; Viisimaa, Ludmilla32nd IUPAC Congress, Stockholm, 2-7 August 1989 : book of abstracts1979 / p. 57 https://www.ester.ee/record=b4149424*est https://kirjandus.geoloogia.info/en/reference/15136

book article

22

book article

Trace elements in phosphate rock and fertilizersViisimaa, Ludmilla; Veiderma, Mihkel; Hödrejärv, HelviInternational Congress on Analytical Sciences 1991 (IUPAC ICAS'91) : abstracts, Chiba, Japan, 25-31 August 19911991 / p. 320

book article

23

journal article

Trace elements in phosphate rock and fertilizersViisimaa, Ludmilla; Veiderma, Mihkel; Hödrejärv, HelviAnalytical sciences1991 / p. 1161-1163 https://kirj.ee/wp-content/plugins/kirj/pub/chem-1-1990-1-4_20230302235446.pdf

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24

journal article

Trace elements in phosphate rock and fertilizesVeiderma, Mihkel; Viisimaa, LudmillaProceedings of the Estonian Akademy of Sciences. Chemistry1990 / 1, p. 1-4: ill

journal article

25

book article

Введение микроэлементов в суперфосфат в условиях действующего производстваБерезин Г.Г.; Viisimaa, Ludmilla; Kuusik, Rein, keemik; Смирнова Л.В.; Воронова Т.В.Перспективы развития и использования минеральных удобрений с микроэлементами : тезисы докладов научно-производственной конференции, 13-15 нояб., 1990 г., г.Киев1990 / с. 42

book article

Viisimaa, Ludmilla (author)

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author 13

CV 11

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