Gupta, S. R <br/><br/>
Modern theory and practice of typewriting book 2 :  it expounds a scientitically improved system of practising the art of typewriting including its theory and Mechanism / 
by S. R. Gupta and K. L. Agarwal 
 - Rev, ed. 
 - Khurja :  Gupta Bros  1956 
 - 96, 72 p. ;  18 cm.