MARC全文
02h0058905 20150206082233.0 s1989 dcuab fr |000|||eng | CNY200.00 NGL a720 ; a742 Bhakta, P. Alkaline oxidative leaching of gold-bearing arsenopyrite ores / by P. Bhakta, J. W. Langhans, K. P. V. Lei. Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1989. 12 p. : ill., maps ; 28 cm. Report of investigations (United States. Bureau of Mines) ; 9258 Gold ; Sodium hydroxide. ; Leaching. ; Oxidation. Metallurgy. aLei, K. P. V. ; aLanghans, J. W. Report of investigations (United States. Bureau of Mines) ; 9258. aCN bNGL 010001 P 720.66 R29u v9258 ; rCNY200.00 ; h1 whx017