Sundar Rao, P. S. S. <br/><br/>
Introduction to biostatistics and research methods / 

 - 4th ed. 
 - New Delhi :  PHI ,  2007. 
 - PpX+262 
<br/><br/><label>ISBN: </label>8120328761 
<br/><br/><label>Subjects--Index Terms: </label>Biostatisstics Research Methods