by Th. Endang Purwoastuti $5.00
by Dr. Sayyid M. Nuh $9.00
by Dr. Ir. M\'Imadduddin Abdul Rahim, M.Sc $6.00
by Michael Keene $9.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by Ahmad Isa Asyur $5.00