Rao, Sundar P S S ; Richard, J <br/><br/>
Introduction to biostatistics and research methods, 5th ed. 

 - PHI Learning pvt ltd.  Delhi  2018 
 - xii,268 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>519.5