by Ir. M. Lies Suprapti $6.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Prof. Dr. Kees Bertens, MSC $7.00
by Hutabarat, Sahala & Evans, Stewart M $5.00
by Adelbert Snijders, OFM Cap $9.00
by J. Donald Walters $5.00