RAO (R Chalapathi). <br/><br/>
B Sc physics: light. Ed 2. 

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 - Guntur  Commercial Literature Co.  1965 
 - ii,231,ii 
<br/><br/><label>Subjects--Topical Terms: </label><br/>B.Sc.  Question Answer Light
<br/><br/><label>Dewey Class. No.: </label>535 RAOB