00478nam a2200157Ia 4500008004100000020001800041022001500059040001300074082001600087100001800103245006500121260004800186300001200234500005200246650002200298191130s2007##################000#0#eng##  a9780521676564  a2006051819  aACLcACL  a001.432 GER  aGerring, John  aCase study research : principles and practicescJohn gerring  aCambridgebCambridge University Pressc2007  ax, 265p  aIncludes bibliographical references and indexes  aHistorical method