by Denny J. A $6.00
by Ir. Mul Muyani Sutedjo $7.00
by Anthony G. Athos $9.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $7.00
by Drs. G. Kartasapoetra $9.00
by Prof. J. Suprapto, M.A. APU $16.00
by Abdul Mujieb $5.00
by $12.00
by Adler Haymans Manurung $6.00
by - $11.00
by - $7.00
by M. Irfan Hidayatullah $6.00