Ecological sustainability of smallholder dairy farm with Leisa pattern

מאת Asminaya, N. S., Purwanto, B. P., Nahrowi, N., Ridwan, W. A., Atabany, A.
יצא לאור 2018

Interaksi antarsuku bangsa dalam masyarakat majemuk

מאת Pelly, Usman, Siahaan, Herlem, Surjo, DJoko, Hitipuew, Frans, Saunsi, Saunsi, Sjamsuddin, Helius, Ridwan, T.A, Rusmini, Nani, Darmono, Darmono, Dharmansyah, Sulaiman Lubis
יצא לאור 1989