by Aziz Alimul $11.00
by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM. $6.00
by Jan Takasihaeng $7.00
by Reza A.A. Wattimena $9.00
by Haryoto $5.00
by Donald L. Levene & John L. Provan, MD $5.00