SINGH, NAVNEET. Cost-return structure of dairy farming on marginal and small farms in sub-mountainous region of Punjab. Indian Journal of Dairy Science, India, v. 71, n. 1, 2017. Disponível em: https://epubs.icar.org.in/index.php/IJDS/article/view/69635. Acesso em: 5 jun. 2026.