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La investigación y los recursos mineros en España
Guereca Tosantos, Luis, (1970)
Mexican silver and the englightenment
Motten, Clement G., (1972)
Post-graduate training and research in applied science in developing countries, the case of mineral exploration
Hale, W. E., (1977)
Toplivno-°energetičeskij balans SSSR i zadači nauki
Mel'nikov, N. V., (1963)
Open-cut coal mining in the USSR : techniques and economics
Mel'nikov, N. V., (1979)
Obsuždenie dokladov po problemam ėkonomiki i techničeskogo progressa
Mel'nikov, N. V., (1966)