by H. R. Kartadisastra $6.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by H. Rahmat Rukmana $5.00
by Drs. E. Sumaryono, MA $11.00
by Subiyakto Sudarmo $6.00
by Theo Riyanto, FIC $6.00