by Ir. M. Lies Suprapti $7.00
by Bambang Agus Murtidjo $6.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Dr. Beate Jakob, Dr. Cristoph Benn & Dr. Erlinda Senturias $7.00
by $20.00
by Prof. Dr. Abdul Munir Mulkhan $12.00