by Emanuel Gerrit Singgih, Ph.D. $7.00
by Dr. Ir. Adji Sastrosupadi, MS $11.00
by Dr. GP. Sindhunata, SJ. (Editor) $10.00
by WK $11.00
by Andrias Harefa $7.00
by Ahmad Syafii Maarif $11.00
by $35.00