00763nam0-22002531i-450-99000307584040332120040128142645.0000307584FED01000307584(Aleph)000307584FED0100030758420030910d1960----km-y0itay50------bay-------001yyExploration for non-ferrous metalsan economic analysisby Lee E. PrestonWashingtonResources for the Future1960x, 198 p.23 cmPreston,Lee E.<1930- >105824ITUNINARICAUNIMARCBK990003075840403321H/2.2232 PRE031753SESSESExploration for non-ferrous metals460197UNINA