TY  - BOOK
AU  - Horne, Sylvia 
AU  - Illustrators:  Hall, Marie [and] Youngman, Paul 
TI  - Patterns and puzzles in mathematics / 
U1  - 510 
PY  - 1970///
CY  - [California, U.S.A] : 
PB  - California State Department of Education
KW  - Puzzle
KW  - Patterns
KW  - Mathematics
ER  -