00273nam a2200121Ia 4500008004100000020001800041041000800059082001000067100002600077245003100103260000900134300000800143240521s1999    xx            000 0 und d  a0-521-08414-8  aeng  a711.5  aED MARTIN L. MARCH L.  aURBAN SPACE AND STRUCTURES  c1999  a272