by Hasan Hanafi $11.00
by John Navone, SJ. $6.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by E. Martasudjita, Pr. $3.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Fahri Asiza, dkk. $7.00