TY  - BOOK
AU  - Wahl,Siegfried von
TI  - Investment appraisal and economic evolution of mining enterprise
SN  - 0878490485
PY  - 1983///
CY  - Clausthal-Zellerfeld, Germany
PB  - Trans Tech Publications
KW  - Mineral industries
KW  - Finance
KW  - Mathematical models
KW  - Investments
ER  -