by Ir. Pracaya $6.00
by Wolfgang Bock, SJ. $6.00
by E. Martasudjita, Pr. $3.00
by DR. Ir. Hj. Tati Nurmala, S.W $6.00
by Paul de Blot, SJ $0.00
by Drs. E. Sumaryono, MA $7.00