TY  - GEN
AU  - Wellmer, Friedrich-Wilhelm
AU  - Dalheimer, Manfred
AU  - Wagner, Markus
TI  - Economic evaluations in exploration
SN  - 9783642092688
U1  - 553 
PY  - 1986///
CY  - Berlin
PB  - Springer
KW  - Mineral industries--Accounting
KW  - Mines and mineral resources
KW  - Geology
N1  - Including reference, appendix and index
ER  -