SAMEENA KHATHOON et al. 2015. Effect of zinc sources and levels on sunflower (Helianthus annuus L.) hybrid in Alfisol: EFFECT OF ZINC SOURCES AND LEVELS ON SUNFLOWER HYBRID IN ALFISOL. Journal of Oilseeds Research. 32, 2 (Dec. 2015). DOI:https://doi.org/10.56739/jor.v32i1.141917.