Description: Educational research:

Main Author:	Wallen, Norman E.
Other Authors:	Fraenkel, Jack R.,
Format:	Book
Language:	English
Published:	Mahwah, N.J.: Lawrence Erlbaum Associates, c2001
Edition:	2nd ed.
Subjects:	Education > Research

Physical Description:	xix, 548 p. : ill. ; 26 cm.
Bibliography:	Includes bibliographical references and index.
ISBN:	0805832807