by Dr. Ir. Adji Sastrosupadi, MS $11.00
by Ir. M. Lies Suprapti $7.00
by Daru Maheldaswara $6.00
by F. Budi Hardiman $9.00
by A. W. van den Ban & H. S. Hawkins $12.00
by Wolfgang Bock, SJ. $6.00