by Ir. Lisdiana Fachruddin $5.00
by $4.00
by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Daniel L. Llowery, CSsR $6.00
by J. Heinrich Arnold $4.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Tio Tek Hong $7.00
by Dr. Sulaiman bin Hamd al-Audah $5.00