PANT, P. S., and T. R. NATARAJAN. “Some Characteristics of Troughs Observed on 5-Day Mean 700-Mb Charts During Winter Season”. MAUSAM 15, no. 4 (October 1, 1964): 595–602. Accessed September 19, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/5577.