by Daoed Joesoef $11.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Drs. Al. Soenarto S.W., dkk $6.00
by Ir. M. Lies Suprapti $6.00
by Anthony F. Chiffolo $4.00
by Sawitri Supardi Sadarjoen $7.00