Items where Author is "Ruchyana, Ruchyana"
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Abdullah, Nazir and Suwandi, Suwandi and Ruchyana, Ruchyana and Mitrosuhardjo, M.M and Sirwando, H. (1988) Pengaruh Cara Pemberian Urea Terhadap Keefisienan Penggunaan N-pupuk dan Hasil Enam Varietas Padi Unggul. Technical Report. PAIR BATAN, Jakarta.