by $11.00
by Joeniarto, S.H $7.00
by M. Yahya Harahap, S. H. $9.00
by Dr. Bahder Johan Nasution, S.H., S.M., M.Hum $7.00
by Herman Hermit, Ir. MT. $7.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Drs. Muhamad Djumhana, S.H. $6.00
by Soepranto. J. $7.00