String theory and m-theory :   a modern introduction / 
3G E-Learning. 
 - New York:  3G E-Learning,  2021. 
 - x, 249 p.  
<br/><br/>Includes reference and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>9781984647399 
<br/><br/><label>Dewey Class. No.: </label>530.14   / T531 2021