TY  - BOOK
AU  - Hatfield, Mary M.
TI  - Mathematics methods for elementary and middle schoole teachers
SN  - 0-471-40212-3
AV  - QA135.6.M385 
CY  - New York
KW  -  Mathematics--Study and teaching (Middle school)
KW  - Mathematics
KW  - Mathematics--Study and teaching (Elementary)
ER  -