Bureau of Mines / Minerals yearbook mineral industries of Latin America and Canada 1993
Year 1993, Volume 3 (1993)
Gurmendi, Alfredo C.
Peru, pp. -256 ff. PDF (2.3 MB)
As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright