PakCat catalogue record Educational research competencies for analysis and applications By Gay, L. R. Bibliographic details ISBN9780132338776 PublisherMerrill/Pearson Publication placeUpper Saddle River, N.J. Publication year2009 Edition9th ed. LanguageEnglish Material typeBook Physical descriptionxvi, 618 p. Additional authorsMills, Geoffrey E. Airasian, Peter W. SubjectsEducation