00533nam a2200181 a 450000500170000002000150001708200160003210000230004824500210007126000480009230000230014050000500016363000370021363000230025063000400027363000200031363000180033320251203091255.0  a0435602225  a577.82bDAR  aDarlington, Arnold  aEcology of walls  aNew YorkbHeinemann Educational Booksc1981  a138 p.b22 cm.cHB  aincludes bibliographical references and index  aEcology - Europe Wall ecosystems  aBiotic Communities  aAutecology and Wall dwelling Plants  aBirds and Walls  aMural ecology