S. HELEN, B. SHAMMUGASUNDARAM. Social Benefit–Cost Ratio of the Interventions in the Coconut Based Homesteads of Central Kerala. Indian Journal of Extension Education, India, v. 46, n. 3&4, p. 73–77, 2022. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/125680. Acesso em: 3 nov. 2025.