Bansal, S. C.  Systems of man   <br/><br/>
Legacy : Systems of man   

 - New Delhi  S C Bansal  2014 
 - 282p. 
 - How humans scales survival   .
<br/><br/><label>ISBN: </label>9788190241649 
<br/><br/><label>Dewey Class. No.: </label>121.6  / P14 (APC)