Grade and Tonnage Relationships Among Copper Depostits -and- Geochemical Exploration Techniques Applicable in the Search for Copper Deposits, Geological Survey Professional Paper 907-A, B
Washington, D.C. United States Government Printing Office, 1975. stapled binding, pages clean, binding very good, illustrated, indexed, An Analysis of the relationships between grades and tonnages of three types of copper deposits-- porphyry, massive sulfide, and strata-bound DN1. More
