by A. Gianto, SJ. $6.00
by John Kirvan $6.00
by P. Suhardiman $6.00
by Peursen, CA van, Prof. Dr $7.00
by Ir. Abbas Siregar Djarijah $5.00
by Drs. Aloysius Soenarto & Stanislaus Suliangto $4.00