An evaluation of technological overburden thickness limit of oil shale open casts by using draglines
Valgma, Ingo
Oil shale
1998
/
p. 134-146: ill
https://kirj.ee/wp-content/plugins/kirj/pub/OS-2-1998-134-146_20220926184733.pdf
https://www.ester.ee/record=b1072685*est