Lawden, Derek F. <br/><br/>
Introduction to tensor calculus and relativity 
Derek F. Lawden 
 - 2nd ed. 
 - London  Chapman & Hall  1968 
 - xii, 193p.; 19cm. 
<br/><br/> library has 3rded. also 
<br/><br/><label>Dewey Class. No.: </label>515.63  / LAW