Govil, A. K., <br/><br/>
Definitions and formulae in statistics 
A. K. Govil 
 - New Delhi :  The Macmillan Company Of India Limited,  c1978. 
 - 135 p.:  ill.; 
<br/><br/><label>Dewey Class. No.: </label>519.50212  / GOV/DEF