PARVENDER SHEORAN, VIRENDRA SARDANA, and R. K. BAJAJ. “Phenophasic Model Based on Growing Degree Days for Sunflower Crop in Punjab Region”. Journal of Agrometeorology 10, no. 2 (December 1, 2008): 233–235. Accessed November 22, 2024. https://journal.agrimetassociation.org/index.php/jam/article/view/1213.