Ravindran, P K <br/><br/>
Bhuthakkannatiyilute 

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 -  Sastra Sahitya parishad  1979 
 - 32p.   
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<br/><br/><label>Subjects--Index Terms: </label>Light  Photometry  Optics  Colour  Optical storage devices  Spectrum analysis  Phosphoresence  Spectroscopy  Physics  optical istruments  microscope 
<br/><br/><label>Dewey Class. No.: </label>535.82=M