by Daniel Grippo $6.00
by Sakti A. Siregar $6.00
by Nasution, Harun $6.00
by Dr. Hery Winarsi, M.S $11.00
by M. Ismail Yusanto, M. Karebet Widjayakusuma $9.00
by J. Donald Walters $3.00
by Ign. Wignyasumarta, MSF. $6.00
by Adi Hidayat dan Murad Lesmana $6.00