PJLLAI, J.S., SANGEETA SAXENA, and K. G. VERNEKAR. “A Six Level Automatic Soil Temperature Measuring System”. MAUSAM 44, no. 2 (April 1, 1993): 163–166. Accessed December 25, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/3814.