00303nam a2200109Ia 4500008004100000082001100041082000800052245003400060245004500094260004500139300000900184231017s9999    xx            000 0 und d  a629.13  bRIG 0aRigid pavements for airfields 0cDepartment of the army and the air force  bDepartment of the army and the air force  c30cm