by Ir. H. Rahmat Rukmana $6.00
by Ir. M. Lies Suprapti $6.00
by Drs. Ig. Wursanto $7.00
by Mgr. P. Van Diepen, OSA. $6.00
by Ir. Abbas Siregar Djarijah $6.00
by Al. Wahjasudibja, Pr. $6.00