by Koko Hidayat $6.00
by Preter Lauster $6.00
by Marry Winata $6.00
by Drs. Rosman Yunus, M.A. Ed, Dkk $7.00
by Ir. M. Lies Suprapti $6.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00