by Ir. Abbas Siregar Djarijah & Nunung Marlina Djarijah $6.00
by Rabi Marc Gellman & Mgr. Thomas Hartman $7.00
by Rudiger Dombusch $12.00
by Ir. H. Rahmat Rukmana & Yuyun Y $6.00
by - $9.00
by Prof. J. Suprapto, M.A. APU $11.00