by J. Sudarmita $9.00
by L. Prasetya, Pr. $3.00
by Siti Rahayu - Titiek F. Djaafar $5.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by M. Ghufron H. Kordi K $7.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00