by Drs. Ign. Masidjo $9.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $11.00
by Titik F. Djafar - Siti Rahayu $6.00
by Ir. Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by Husein Umar $9.00
by Michael Keene $12.00