00579nam a2200217   450000500170000000600040001700700040002100800040002502000180002904000090004705000220005610000170007824500850009525000120018026000330019230000260022550000490025165000140030070000280031470000190034220221028111314.0000000000  a9781138209886  aUOEL  aLB1028b.C57 2018  aCohen, Louis  aResearch methods in Education /cLouis Cohen, Lawrence Manion and Keith Morrison  a8th ed.  aLondon :bRoutledge,cc2018.  axxvii, 916 p. :bill.  ainclude bibliographical references and index  aEducation  aManion LawrenceeEditor  aMorrison Keith