by Prof. Mr. Roeslan Saleh $5.00
by Editor: Bantarto Bandoro $11.00
by Ir. M. Iqbal Hasan $11.00
by Sir Muhammad Iqbal $6.00
by Ir. Abbas Siregar Djarijah & Ir. Harsono Puspowardoyo $5.00
by Hasanuddin $11.00
