TY  - BOOK
AU  - Vaughan,Liwen
TI  - Statistical Methods for the Information Professional:Practical, Painless Approach to Understanding, Using, and Interpreting Statistics
SN  - 9788170005520
U1  - 519.5 
PY  - 2009///
CY  - New Delhi
PB  - Ess Ess Publications
KW  - data collection
ER  -