by Koesriani Siswosoebroto $6.00
by H.R.A.C. Lawalata $9.00
by $9.00
by J. C. T. Simorangkir, S. H., dkk. $9.00
by Prof. Drs. C.S.T. Kansil, S.H. $11.00
by M. Yahya Harahap, S. H. $18.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00