by Dr. Al. Purwa Hadiwardoyo, MSF. $3.00
by Abdul Mujib, Jusuf Mudzakir $9.00
by J.H. Meulemen $6.00
by Ir. M. Lies Suprapti $6.00
by M. Fauzil Adhim $6.00
by Muh. Rahmat Najieb $6.00
by Katzung $24.00