by Dr. Niels Mulder $9.00
by H. Rahmat Rukmana $6.00
by Drs. Ign. Masidjo $9.00
by $12.00
by Yernelis Sukma, M.S., & Yakup $7.00
by St. Darmawijaya, Pr $4.00
by E. Jaspan Kusuma $6.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00