by A. W. van den Ban & H. S. Hawkins $12.00
by $0.00
by Warisno $5.00
by Djoehana Setyamidjaja, M.Ed $7.00
by Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by H. Rahmat Rukmana $5.00