by Dr. Mustofa Muhammad asy-Syak'ah $11.00
by Robert J. Wicks $6.00
by Drs. Ign. Masidjo $9.00
by Zulkifli Zakaria $5.00
by Dr. Ir. Muhammad Rasyaf, MS $7.00
by Ir. Heinz Frick & Moediartianto $7.00
by Dr. E.G. Brahmaputra Marjadi, M.P.H $7.00