by Ahmad Akrom Fahmi $7.00
by Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $13.00
by Dr. P. A. van Der Weij $7.00
by H. Rahmat Rukmana $6.00
by $4.00