na INLIS000000000008283 I 0010-0317008281 Pidato pengukuhan guru besar Universitas Gadjah Mada Ilmu-ilmu pertanian Volume II Yogyakarta : Gadjah Mada University Press 2000 xi,726 hlm. 21 cm 9794204749 630 Uni p 630 AGRICULTURE 033002111 033002111