Agrawal, S. B., A. Singh, and D. Rathore. “INTERACTIVE EFFECT OF AIR POLLUTION AND NUTRIENTS ON BIOCHEMICAL PROCESSES AND YIELD OF WHEAT GROWN IN PERI-URBAN AREAS OF ALLAHABAD CITY”. Ecoprint: An International Journal of Ecology, vol. 11, no. 1, Jan. 2004, doi:10.3126/eco.v11i1.139.