by dr. Santoso Gunardi, MS, PAK
$6.00

by Foster, George M. & Anderson, Barbara Gallatin
$7.00

by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ
$5.00

by Aziz Alimul
$9.00

by Prof. Dr. dr. Sudraji Sumapraja, SpOG(K)
$5.00

by G. Siregar, Laksmi
$7.00