Calorific value and amounts of oil shale delivered to power plants from mines and opencasts in 1968-1997
Õispuu, Leo
;
Randmann, Rein
;
Rootamm, Rein
;
Ingermann, Karl
Oil shale
2000
/
1, p. 37-44 : ill
https://artiklid.elnet.ee/record=b1003457*est