by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $13.00
by Asmaran AS $7.00
by A.M. Mangunhardjana, SJ $6.00
by - $6.00
by Drs. K.H. Toto Tasmara $9.00
by Edy Soatanto, N, BE $5.00