Mitchell, Mark Jolley, Janina Research Design Explained - 5th ed. - Wadsworth United States of America 2004 - xix, 570 p., 27 cm 01 ISBN: 053461731x Nat. Bib. No.: 37164 Nat. Bib. Agency Control No.: 150.1 MIT Subjects--Topical Terms: Philosophy and theory: systems, viewpoints Universal Decimal Class. No.: 150.1 MIT