Singh, Adarsh <br/><br/>
Parametric study of micronutrients available in allium cepa ( onion)  grown using dewatered sewage sludge as fertilizer and its comparison 

 - Hamirpur :  National Institute of Technology,  2023. 
 - xv, 61p. 
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<br/><br/><label>Dewey Class. No.: </label>624  / SIN