Tractor  ട്രാക്റ്റര്‍ 

 - Thiruvananthapuram  Kerala Bhasha Institute  1973 
 - 1-xii, 1-247 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops And Their Production   Plant CropsTractorsREFLECTION OF LIGHT AT CURVED SURFACES, REFRACTION THROUGH THIN LENSES, THICK LENSES, OPTICAL INSTRUMENTS, PHYSICAL OPTICS, INTERFEROMETRY , DIFFRACTION OF LIGHT ROTATORY POLARISATION POLARIMETRY, POLARISATION OF LIGHT
<br/><br/><label>Dewey Class. No.: </label>631.372  / KON-T