00262nam a2200097 a 4500008004100000050001600041100002000057245006900077260000900146350000900155120416s1979    xx |||||||||||||| ||    u  aNA 9050 Exp  aWeber, Melvin M10aExplorations into urban structurecMelvin M. Webber [and others]  c1979  a0.00