by Ir. Yushinta Fujaya, M.Si $7.00
by - $11.00
by Dr. C. Asri Budiningsih $6.00
by - $12.00
by Radiks Purba $12.00
by C. Rollin Niswonger $12.00
by Robert H. Thouless $7.00
by Ade Fatimah $6.00
by Sisca Soewitomo $6.00
by Yasa Boga $6.00
by Mary Rebecca 'Rivkha' E. Rogacion R. G. S $7.00
by A. Amarah, dkk $6.00