by Linda Smith & William Raeper $11.00
by Ir. H. Rahmat Rukmana $6.00
by dr. Muhardi Muhiman, Prof. dr. Arjatmo Tj. $5.00
by Ir. L. Widarto & FX. Sudarto C. Ph $5.00
by Ir. Heinz Frick $6.00
by Dr. Franz Magnis Suseno, SJ $7.00