by Ir. Hieronymus Budi Santoso $5.00
by Dr. Ir. Kemas Ali Hanafiah, M.S., dkk $7.00
by Ir. Setijo Pitojo $6.00
by Prof. Dr. Soekartawi $6.00
by Ir. Mul Muyani Sutedjo $7.00
by Robert W. Crapps $6.00