VS, J., ., R., BISHT, S., & GROVER, S. (1992). YEARLY VARIATION IN CERTAIN PHYSICO-CHEMICAL PARAMETERS OF POND AT EASTERN DOON VALLEY. UTTAR PRADESH JOURNAL OF ZOOLOGY, 12(1), 75–77. Retrieved from https://www.mbimph.com/index.php/UPJOZ/article/view/1073