by D.B. Jellife $7.00
by Drs. Suwarna Pringgawidagda, M.Pd $18.00
by Prof. DR. S.P. Siagian, M.P.A $9.00
by Abdul Munir Mulkhan $7.00
by Pandji Anoraga, S.E., M.M $13.00
by - $16.00
by Munir Fuady, S.H., M.H., LL..M. $5.00
by $11.00
by - $7.00
by R. Soeroso, S. H. $9.00