TY  - BOOK
AU  - Duncan, Ernest R. 
TI  - Houghton Mifflin mathematics
SN  - 0395359120
U1  - 510 
PY  - 1985///
CY  - Atlanta
PB  - Houghton
KW  - Mathematics--Study and teaching (Elementary)
KW  - Mathematics
KW  - Arithmetic--Study and teaching (Elementary)
KW  - Arithmetic--Study and teaching (Primary)
KW  - Mathematics--Study and teaching (Primary)
KW  - Arithmetic
KW  - Geometry--Study and teaching (Elementary)
KW  - Mathematics--Study and teaching
N1  - Include Index
ER  -