Ohlan R, Ohlan A, Singh R. Impact of Soil Health Card on Urea Fertilizer Usage and Crop Yield in Haryana. Indian J Ext Edu [Internet]. 2025 Apr. 1 [cited 2026 Jun. 25];61(2):35-9. Available from: https://epubs.icar.org.in/index.php/IJEE/article/view/165252