Varishtha, A. R. and Gupta, R. K. <br/><br/>
Dynamics  Dynamics, Meerut : Krishna Prakashan, 2004 
A. R. Varishtha and R. K. Gupta 
 - Meerut  Krishna Prakashan  2004 
<br/><br/><label>Dewey Class. No.: </label>531.3