MARC全文
02a0016768;20011205d1993 ekmy0engy01;eng;a z 000yy;r;The availability of primary lead and zinc in market economy countries;a minerals availability appraisal;Carl A. DiFrancesco, Joseph L. Cornellisson & Gary R. Peterson;Wash., D.C.;U.S. Bureau of Mines;1993;iv, 39 p.;ill;Information Circular;U.S. Bureau of Mines;no.9369;2001b;aInformation Circular ; fU.S. Bureau of Mines ; vno.9369;市场经济各国家中原生铅和原生锌的可获量;a423.2-7;DiFrancesco ; Cornellisson ; Peterson;Carl A. ; Joseph L. ; Gary R.;101;453985;P;720.66;In3;v9369 ; r261.95;a03;b1;cP