by ISEI $18.00
by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Wendy M. Wright $6.00
by A. W. van den Ban & H. S. Hawkins $12.00
by A. B. Setiaji $9.00
by Paul de Blot, SJ $0.00
by Ir. Sujamto $9.00