by H. Rahmat Rukmana $6.00
by Drs. Sri Panudju Karso $6.00
by Ir. Heinz Frick & Moediartianto $7.00
by Ir. Ari Wijayani Purwanto $11.00
by Dr. Harun Hadiwijono $7.00
by Ir. Suprio Guntoro $5.00