TY  - BOOK
AU  - Wigle, Robert.
AU  - Dowling, Paul.
AU  - Jennings, Paul.
TI  - Mathematical pursuits four
SN  - 0770516939
U1  - 510 
PY  - 1978///
CY  - Toronto
PB  - Macmillan of Canada
KW  - Mathematics
N1  - Includes index
ER  -