by Dr. Nashir al-Aql $5.00
by Muh. Hasan al-Homshi $6.00
by Agus M. Hardjana $6.00
by Dr. Ir. M\'Imadduddin Abdul Rahim, M.Sc $6.00
by L. Prasetya, Pr. $6.00
by Ahmadi Isa $6.00