MARC全文
02h0059181 20140618165004.0 s1992 dcuab fr |000|||eng | CNY200.00 NGL a755 ; a751 Harbuck, D. D. Gallium and germanium recovery from domestic sources / by D. D. Harbuck. Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1992. 26 p. : ill., maps ; 28 cm. Report of investigations (United States. Bureau of Mines) ; 9419 Gallium ; Leaching. ; Germanium ; Solvent extraction. Metallurgy. ; Metallurgy. Report of investigations (United States. Bureau of Mines) ; 9419. aCN bNGL 010001 P 720.66 R29u v9419 ; rCNY200.00 ; h1 yao013