by WK $12.00
by WK $13.00
by Aziz Alimul $7.00
by R. Soegeng $16.00
by Prof. J. Suprapto, M.A. APU $11.00
by Malvino $20.00
by N. Edy Soetanto, BE. $5.00
by Dr. Niels Mulder $11.00
by Abdul Nasier $12.00
by Andiyan Lutfi $8.44