by Prof. Dr. Soekartawi $7.00
by Rumsari Hadi Sumarto & Lukas Dwiantara $7.00
by Don W.S., Threes Emir, dan Cherry H $7.00
by N. Edy Soetanto, BE. $5.00
by Dr. D. F. Walker $7.00
by Ir. Nur Tjahjadi $5.00