by Prof. Dr. Oemar Hamalik $7.00
by Prof. Soetjipto dan Drs. Raflis Kosasi, M.Sc $9.00
by Chandrakirana, Kamala, Isono Sadoko $7.00
by Noor, A.S.Mohammad $6.00
by Drs. H.M. Daryanto $9.00
by Prof. Dr. Oemar Hamalik $9.00
by Ign. Wignyasumarta, MSF. $6.00
by Abdul Aziz asy-Syinnawi $6.00
by Terra CH $5.00
by Anand Krishna $11.00
by Drs. M. Sastrapratedja $11.00
by - $9.00