by Ir. M. Lies Suprapti $7.00
by Ir. Nur Tjahjadi $5.00
by H. Rahmat Rukmana $5.00
by Huub J. W. M. Boelaars, OFM.Cap. $15.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by $4.00