na SULTE-04110000000291 20110419144805.0 190705||||||||| | ||| |||| ||ind|| 979-8140-77-X 0010-041100000000291 STPDPAL ind [21] 523.12 523.12 RIT a Ritonga, Abdul Rahman Alam semesta/ Abdul Rahman Ritonga Jakarta: Lembaga Penerbit Fakultas Ekonomi Universitas Indonesia, 1997 xi, 214 hlm.: ilus.; 21 cm. Bibliografi: hlm. 212-214 Alam Semesta 11562-11564/PD/97