00565nam a2200241Ia 450000500170000000800460001702000180006303700100008104000080009104000080009904000080010704100080011504100080012308400080013110000160013924500270015524500430018226000230022526000090024836500050025736500080026285600530027020260324150348.0008  260324s9999    xx            000 0 eng d  a9781351312684  aEBOOK  aCRL  beng  cCRL  2eng  aeng  qCRL  aRobert Hess 0aEarly Formal Education 0bCurrent Theory, Research, and Practice  bTaylor and Francis  c1968  a  b255  uhttp://www.taylorfrancis.com/books/9781351312684