00489nam a2200145Ia 4500008004100000020001800041050002200059100002200081245009800103250001200201260003300213300002900246500006100275521000700336140529s9999    xx            000 0 und d  a9781452274614  aH 62b.C6963 2014  aCreswell, John W.  aResearch design :bqualitative, quantitative and mixed methods approaches /cJohn W. Creswell  a4th ed.  aLos Angeles :bSAGE,cc2014.  a273 p. :bill. ;c26 cm.  aIncludes glossary, bibliographical references and index.  aGE