by Drs. Daryanto $7.00
by $11.00
by Aji Supriyanto $16.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $11.00
by Ny. Susmayati, B.A dan Ny. Hj. Asnidar $7.00
by J. Donald Walters $5.00