by Drs. M. Sastrapratedja $11.00
by AAK (Aksi Agraris Kanisius) $7.00
by Ir. Sukim Prayitno $5.00
by Jaelani, S.Si $7.00
by Suhardjo $7.00
by Ir. Setijo Pitojo $6.00
by Drs. A.W. Widjaja $6.00
by Yuke Ardiati $7.00
by Heru Susanto $6.00
by Norman P. Tanner $6.00
by Frank Mihalik, SVD $7.00
by Peursen, CA van, Prof. Dr $7.00