Preston, Lee E.
Exploration for non-ferrous metals : an economic analysis / Lee E. Preston - Washington : RFF , 1960 - x, 198p. : ill. ; 20 cm.
Includes bibliographical references and index.
Natural resources--United States
Nonferrous metal industries
Minerals
553.1 / PRE
Exploration for non-ferrous metals : an economic analysis / Lee E. Preston - Washington : RFF , 1960 - x, 198p. : ill. ; 20 cm.
Includes bibliographical references and index.
Natural resources--United States
Nonferrous metal industries
Minerals
553.1 / PRE