by Bence, Richard $7.00
by P. Suhardiman $6.00
by Drs. Sri Panudju Karso $6.00
by Sudjiman, H. Panuti $5.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by Wirakusumah, Sambas $9.00
by Sukarno $5.00
by Agus Pambagio $3.84