by Ir. Dudung Abdul Muslim $9.00
by Hal Wissel, Ph.D $9.00
by Nunung Marlina Djarijah & Ir. Abbas Siregar Djarijah $6.00
by Suherman Rosyidi $18.00
by William J. Altier $11.00
by Dr. Yusuf Al-Qardlawi $6.00