Singh, Shweta, and Sunita Singh. “An Analysis of the Activity of Science Textbook With Reference to Science Process Skills”. JOURNAL OF INDIAN EDUCATION 45, no. 2 (August 31, 2019): p. 91–103. Accessed March 17, 2025. http://45.127.197.188:8090/index.php/jie/article/view/2628.