by Drs. Wartono Hadie & Dra. Lies Emmawati Hadie $6.00
by Ir. Hatta Sunanta, B.Sc., MS $5.00
by ISEI $12.00
by A. W. van den Ban & H. S. Hawkins $12.00
by Maharsono Probho, SJ $5.00
by Marsana Windhu $3.00