Ghandapatham  ഘണ്ടാപഥം 

 - Kozhikodu  P.K. Brothers  1964 
 - 139 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GeneralFUNDAMENTALS OF REFLECTION AND REFRACTION, OPTICAL INSTRUMENTS.
<br/><br/><label>Dewey Class. No.: </label>894.812 8  / GOV-G