An interview with Alvar Soesoo, the director of the Geological Survey of Estonia
Soesoo, Alvar
Yearbook 2018 / Geological Survey of Estonia
2019
/
p. 6-7 : portr
https://www.egt.ee/sites/default/files/content-editors/aastaraamat/egt_aastaraamat_eng_web.pdf
https://www.ester.ee/record=b5231713*est