by H. Rahmat Rukmana $6.00
by Ir. Heinz Frick & FX. Bambang Suskiyatno $6.00
by Vincent P. Colinns $6.00
by Ernest Mariyanto $4.00
by Ir. L. Widarto & FX. Sudarto C. Ph $5.00
by Ir. Heinz Frick $6.00