by $4.00
by Adnan Hasan Baharits $13.00
by Dr. Ir. H.S. Farid Ruskanda, M.Sc. A.P.U. $5.00
by J. Darminta, SJ $3.00
by Drs. Yustinus Semiun, OFM $16.00
by Drs. H. Abu Ahmadi $9.00