by Ir. Setijo Pitojo $6.00
by Ir. Hatta Sunanta, B.Sc., MS $5.00
by Djoehana Setyamidjaja, M.Ed $7.00
by Dr. Ir. Muhammad Rasyaf, MS $9.00
by Ir. Hieronymus Budi Santoso $5.00
by J. Robert Starratt $7.00
by Bambang Sunggono, S.H., M.S. $8.00