by C.J. Bohm, MSC. $4.00
by Ir. H. Rahmat Rukmana $5.00
by Ir. Abbas Siregar Djarijah $5.00
by Dr. Soekartawi $6.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00
by Drs. Al. Soenarto S.W., dkk $6.00
by Haideh Moghissi $9.00
by Robert N. Anthony $7.00
by Warisno $7.00
by Jaelani, S.Si $7.00
by - $16.00
by Roy Jordaan (ed.) $13.00