VON WAHL, Siegfried
Investment appraisal and economic evaluation of mining enterprise - Clausthal Trans Tech Publications 1983 - 249 p.
0-87849-048-5
MINING ENGINEERING-ECONOMIC ASPECTS
622:338 / V6
Investment appraisal and economic evaluation of mining enterprise - Clausthal Trans Tech Publications 1983 - 249 p.
0-87849-048-5
MINING ENGINEERING-ECONOMIC ASPECTS
622:338 / V6