by H. Rahmat Rukmana $5.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by $4.00
by Bambang Agus Murtidjo $6.00
by E. Martasudjita, Pr. $3.00
by Ernest Mariyanto $4.00
by Ir. Bambang Cahyono $7.00