TY  - BOOK
AU  - Krajcik,Joseph S.
AU  - Charlene M Czerniak  .
AU  -  Carl F.Berger
TI  - Teaching science in elementary and middle school classrooms: a project-based approach 
SN  - 0072486740 (pbk. : acidfree paper)
AV  - Q181 . K73 2003
PY  - 2003///
CY  - Boston
PB  - McGraw-Hill
KW  - Science
N1  - Includes bibliographical references and index
UR  - http://www.loc.gov/catdir/description/mh024/2002107634.html
UR  - http://www.loc.gov/catdir/toc/mh023/2002107634.html
ER  -