TY  - BOOK
AU  - Merrill,Helen Abbot
TI  - Mathematical excursions: side trips along paths not generally traveled in elementary courses in mathematics 
U1  - 510.76 18
PY  - 1933///
CY  - Norwood, Mass.
PB  - Print. by the Norwood press
KW  - Mathematical recreations
KW  - Mathematics
KW  - Problems, exercises, etc
N1  - "Answers to some of the problems": p. 144-145
ER  -