TY  - BOOK
AU  - Spectrum 
TI  - Spectrum science 
SN  - 9781483811697
AV  -  Q 182 .S65 2015 
PY  - 2015///
CY  - Greensboro 
PB  - Carson-Dellosa 
KW  - Science-study and teaching
KW  - Science-problems, exercises
KW  - Elementary education
ER  -