SINGH, IQBAL, and PHOOL SINGH. “HEAT AND PHOTOTHERMAL INDICES AND THEIR RELATIONS TO PHENOLOGY IN WHEAT”. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING 56, no. 03 (August 25, 1996): 292–298. Accessed September 30, 2025. https://isgpb.org/journal/index.php/IJGPB/article/view/2578.