by dr. LA. Hartono $5.00
by dr. Titus S. Pusponegoro, Prof. dr. Hans E. M. $5.00
by Ir. Arif Hartoyo, M. S $5.00
by DR. Dr. Sidartawan Soegondo, SpPD-KEMP, FACE $11.00
by Nursalam $7.00
by Brooks $18.00