by Ir. M. Lies Suprapti $6.00
by Dr. Khalid Abu Syadi $5.00
by Drs. H. Abu Ahmadi $7.00
by Ir. Heinz Frick & Ch. Koesmartadi $6.00
by H. Rahmat Rukmana $6.00
by Dr. Sayidd Al-Jumaili $7.00