by Lachman, L., Herbert A. Lieberman & Joseph L. Kanig $18.00
by Prof. Djafaruddin $9.00
by Ir. Daisy P. Sriyadi Hendaryono $6.00
by Soemartojo, Noeniek $6.00
by Karyawan Perangin angin $6.00
by Ir. Jumar $9.00