Perubahan komponen varian genetikakibat dua siklus seleksi massa pada tanaman jagung manis (Zea mays saccharata Sturt)=The Relative Change of Genetic Variance Components After Two Cycles of Mass Selection in Sweet .... - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 1992)