TY  - BOOK
AU  - Nichols,Eugene Douglas
ED  - Holt, Rinehart and Winston 
TI  - Elementary mathematics: patterns and structures 
U1  - 372.7044 23
PY  - 1968///.
CY  - New York: 
PB  - Holt, Rinehart and Winston, 
KW  - Mathematics
KW  - Study and teaching (Elementary)
N1  - Includes index and bibliography
ER  -