Vijayan, M. R. <br/><br/>
Mannum sasyaposhanavum - 1 / 
by M. R. Vijayan and T. N. P. Pisharody 
 - Thiruvananthapuram :  Kbi,  1971. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Agriculture Soil & Plant Nutrition