TY  - BOOK
AU  - Langley, Russell
TI  - Practical statistics simply explained
SN  - 9780486227290
SN  - 77145771
U1  - 519.5 LAN 
PY  - 1971///, c1970]
CY  - Mineola, NY
PB  - Dover Publications
KW  - Probabilities
KW  - Statistics
N1  - 1968 ed. has title: Practical statistics for non-mathematical people
ER  -