PENAPISAN GENOTIPE CABAl (Capsicum annuum L.) TOLERAN A'-UMINIUM BERDASARKAN PERBEDAAN PANJANG AKAR PADA FASE VEGETATIF = THE SCREENING OF CHILI TOLERANT-GENOTYPES TO ALUMINUM BASED ON THE ROOTS LENGTH IN VEGETA TIVE PHA - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2007)