@book{ Solr-KOHA-OAI-TEST:20, title = {Cereal nitrogen fixation : Proceedings of the working group meeting, India, 9-12 October 1984}, publisher = {Patancheru, IN International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)}, year = {1986}, url = {http://agropedia.iitk.ac.in/openaccess/sites/default/files/RA%2000097.pdf} }