TY  - BOOK
AU  - Enger, Sandra K
AU  - Yager, Robert Eugene
TI  - Assessing student understanding in science : a standards-based K-12 handbook
SN  - 9781412969925
U1  - 507.1 ENG 
PY  - 2009///
CY  - Thousand Oaks, CA
PB  - Corwin Press
KW  - Science - Ability testing - United States - Handbooks, manuals, etc
ER  -