Walia,Ritu and Raizada G R <br/><br/>
Joint UGC -CSIRNET/SLET Physical sciences/ 
by Ritu Walia and G R Raizada 
 - Gurgaon  : Cosmos book hive  , 
 - 731pages 
<br/><br/><label>Dewey Class. No.: </label>R 371.26 WAL/J