na INLIS000000000020268 20231202144322 231202||||||||| | ||| |||| || | 010-1223020268 id 333.7 333.7 Ski s Permana Skinner, Brian J. Sumber daya bumi = earth resources Yogyakarta Gadjah Mada University Press 1984 188 hlm. : ilus. ; 22 cm. R11.03 - R11-0045 Sumber Alam