by Prof. Mr. Roeslan Saleh $5.00
by Ir. Kaslan A. Tohir $12.00
by Prof. Mr. Roeslan Saleh $7.00
by Drs. H. Abu Ahmadi $9.00
by Drs. Rusyadi $6.00
by Prof. J. Suprapto, M.A., APU $12.00