by Prof. Dr. H. Jalaluddin $11.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Ir. Loekas Soesanto, M.S., Ph.D $11.00
by $4.00
by Steve Biddulph $11.00
by Dr. Najaat Hafidz $5.00
by Herbert G. Hick dan G. Ray Gullet $20.00
by Bambang Agus Murtidjo $7.00
by Ir. Bambang Cahyono $6.00
by Ir. M. Lies Suprapti $6.00
by - $13.00
by Prof. Dr. H. Zainuddin Ali M. A. $7.00