by Dennis L. Poster $16.00
by Drs. Daryanto $7.00
by Drs. Rusyadi $6.00
by Vincent Gaspersz $11.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $6.00
by Dermawan Wibisono $11.00
by DR. Soekidjo Notoatmodjo $7.00