TY  - BOOK
AU  - Whitworth W A
TI  - Choice and chance: an elementary treatise on permutations, combinations and permutations, combinations and probability, with 640 exercises
U1  - 519.1 
PY  - 1925///
CY  - New York
PB  - G E Stechert
KW  - Chances
KW  - Permutation and combinations
KW  - Probability
ER  -