by Ir. Budi Samadi & Ir. Bambang Cahyono $7.00
by H. Rahmat Rukmana $5.00
by N. Edy Soetanto, BE. $5.00
by M. Gani Kristianto $12.00
by JVS. Tondowidjojo, CM $5.00
by Suharyo, I., Pr, Mgr. $4.00