by $6.00
by Prof. Mr. Dr. Sudargo Gautama $6.00
by Richard L. Brown $7.00
by Prof. Mr. Dr. Sudargo Gautama $5.00
by Yernelis Sukma, M.S., & Yakup $7.00
by Prof. Dr. H. Jalaluddin $7.00
by Srivastava. UK., GV. Shenoy, SC. Sharma $11.00
by Dr. H. Achmad Ruky $12.00