by Ir. M. Lies Suprapti $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by $4.00
by H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM $6.00
by Emanuel Gerrit Singgih, Ph.D. $7.00
by Dr. C. Groenen, OFM. $7.00