by - $7.00
by A. Yuniarti, S.Pd. $8.00
by ANDY F. NOYA $10.00
by Hilman Hariwijaya & Boim Lebon $6.00
by American Asociation of State Highway and Transportation Officials $9.00
by R. Soeroso, S. H. $12.00
by $13.00
by Moh. Taufik Makarao, S.H., M.H $11.00
by R. Wiyono, S.H. $11.00