by Drs. Hendiyat Soetopo $11.00
by Hasan Basri Jumin $9.00
by Lukman Syamsuddin $13.00
by Ghufron A. Mas'adi $6.00
by Dr. Moh. Efendi, M.Pd., M.Kes $7.00
by Joan M. Nelson $7.00