by Sutarni M. Soerjowinoto $6.00
by Bambang Agus Murtidjo $6.00
by drh. N. Tarigan, MSc $6.00
by Djoehana Setyamidjaja, M.Ed $6.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by R.P.S. Padmobusono $3.00