S.K. VARMA AND B.P. SINHA. A Measurement of Drudgery Involved in Selected Farm Operations. Indian Journal of Extension Education, India, v. 26, n. 1-2, p. 49–54, 2024. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/160242. Acesso em: 15 jul. 2026.