H. M. Schey <br/><br/>
Div, Grad, Curl , and all that 

 - London  W. W. Norton &amp; Company  1973 
 - 163 
<br/><br/><label>ISBN: </label>0-393-96251-2 
<br/><br/><label>Dewey Class. No.: </label>515.63 SCH-D 1973