by Prayoga Utama $9.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by Syamsir Abduh $9.00
by Prof. dr. Nurbaiti Iskandar, SpTHT $6.00
by WK $12.00
by P.E. Lorenz $5.00
by $40.00