by Thomas A. N. S $6.00
by Fajar Arifin Gunawan & Elna Kartawiguna $10.00
by Prof. dr. D. Bachtiar Lubis, dr. Sylvia D. Elvira $7.00
by Andang Gunawan $12.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $5.00
by Dripa Sjabana $7.00