00550nam a2200229Ia 450000500170000000800460001702000180006303700100008104000080009104000080009904000080010704100080011504100080012308400080013110000460013924500370018526000230022226000090024536500050025436500080025985600530026720260324150022.0008  260324s9999    xx            000 0 eng d  a9780203393253  aEBOOK  aCRL  beng  cCRL  2eng  aeng  qCRL  aClement Adelman; Roy Walker; Clem Adelman 2aA Guide to Classroom Observation  bTaylor and Francis  c1975  a  b300  uhttp://www.taylorfrancis.com/books/9780203393253