by $9.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $11.00
by Ny. Susmayati, B.A dan Ny. Hj. Asnidar $7.00
by Miles Matthew B. dan A. Michael Huberman $9.00
by WK $12.00
by Ir. Hieronymus Budi Santoso $5.00
by Drs. Djalinus Syah $11.00
by Heru Yuwono $7.00