World mineral statistics production, exports, imports. 1991-95
British geological survey.
- Keyworth BGS 1996
- v, 294 p. 30 cm
0852722869 9780852722862
estadisticas
mundiales
minerales
549 (410.146) (02)
0852722869 9780852722862
estadisticas
mundiales
minerales
549 (410.146) (02)