TY  - BOOK
AU  - Wellmer Friedrich-Wilhelm
TI  - Economic evaluations in exploration
SN  - 9783540735571
U1  - X:(B), P8 
PY  - 2008///
CY  - Berlin
PB  - Springer-Verlag.          
KW  - Economics
N1  - Bibliography P197-200; Appendix P201-238
ER  -