TY  - BOOK
AU  - Nichols,Eugene Douglas
AU  - Flournou,Frances
AU  - Kalin,Robert
AU  - Simon,Leonard
ED  - Holt, Rinehart and Winston 
TI  - Mathematics: patterns and structure 
U1  - 372.7 23
PY  - 1968///.
CY  - [United States]: 
PB  - Holt, Rinehart and Winston, Inc., 
KW  - Mathematics
KW  - Study and teaching (Elementary)
ER  -