by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Prof. Dr. Taufik Abdullah $60.00
by Refly $9.00
by ABD AL-'AZIZ AL-DARINI $25.00
by DR. Sunita Almatsier, M.Sc $13.00
by Moh. Daud Ali $11.00