TY  - GEN
AU  - Walker, Helen Mary, 1891-
TI  - Mathematics essential for elementary statistics: a self-teaching manual
U1  - 510 
PY  - 1934///
CY  - New York
PB  - Henry Holt
KW  - Mathematical statistics
KW  - Statistical mathematics
KW  - Teaching guides
KW  - Mathematics
ER  -