by Bambang Agus Murtidjo $6.00
by Ir. Abbas Siregar Djarijah $5.00
by H. Rahmat Rukmana $5.00
by Drs. E. Sumaryono, MA $11.00
by Edgar Morin $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $5.00