by Istimawan Dipohusodo $13.00
by Prof. Dr. Kees Bertens, MSC $13.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Drs. Al. Soenarto S.W., dkk $6.00
by Ir. Abbas Siregar Djarijah $6.00
by Darminta, J, SJ $4.00