RAM SINGH AND V.K. SINGH. Prospects and Constraints in Promotion of Pyrite Based Usar Reclamation Technology in Central Uttar Pradesh. Indian Journal of Extension Education, India, v. 22, n. 1-2, p. 91–93, 2024. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/162192. Acesso em: 26 oct. 2025.