by Ir. Suprio Guntoro $5.00
by Drs. Sudarsono, S.H., M.Si $9.00
by Drs. Syaiful Bahri Djamarah $9.00
by Ir. H. Rahmat Rukmana $6.00
by Prof. Dr. Soekidjo Notoatmodjo $9.00
by Claude P. Wratal $13.00