by Radiks Purba $12.00
by John H. Procton $7.00
by Drs. G. Kartasapoetra $9.00
by A.H. Polard, dkk $11.00
by Sayyid Sabiq $9.00
by Ir. Setijo Pitojo $7.00
by Sulaiman Hamid, SH $7.00
by Kansil C.S.T $11.00
by Dennis L. Poster $16.00
by Ir. H. Rahmat Rukmana, MBA., M.Sc. & Uu Sugandi Saputra, B.Sc $6.00
by Ir. Rudy Gunawan $5.00
by - $16.00