by Drs. Harry Waluya $9.00
by Robert H. Lauer $13.00
by Steven D. Levitt & Stephen J. Dubner $11.00
by John W. Osbome $7.00
by Prof. Dr. Makmur, M.Si $7.00
by D. Soesetro & Zein $6.00
by Prof. Mr. Dr. Sudargo Gautama $7.00
by Bertram $9.00
by Oka A. Yoeti $6.00
by Guenther, Ernest $7.00
by - $7.00