by Ir. Sumeru Ashari, M.A gr. Sc $7.00
by Prof. Drs. C.S.T. Kansil, S.H. $11.00
by $6.00
by Bruce J. Cohen $13.00
by $12.00
by Drs. Muchdarsyah Sinungan $11.00
by Radiks Purba $13.00
by $4.00
by - $16.00
by Daoed Joesoef dan Jusuf Sutanto $6.00
by H. PROF. DR. AFIF MUHAMMAD, M.A. $20.00