by $4.00
by Prof. Dr. Komarudin Hidayat $5.00
by Ir. Setijo Pitojo $7.00
by Dr. Ali Gharisah $5.00
by Segundo Galilea $6.00
by Adian Husaini, M.A. & Nuim Hidayat $7.00
by Suwarno $7.00
by D.B. Jellife $7.00