by Smith, John B. & Soesanto Mangkoewidjojo $6.00
by Ir. Rahmat Rukmana $5.00
by Ir. Hieronymus Budi Santoso $6.00
by Katekese komkat KWI $4.00
by Ir. Lisdiana Fachruddin $5.00
by Ir. M. Lies Suprapti $7.00