AMRIK SINGH , J. S. BHALLA AND DHARMINDER SINGH. Knowledge Level of Farmers About Recommended Production Techniques of Bt Cotton in Punjab. Indian Journal of Extension Education, India, v. 53, n. 1, p. 100–103, 2017. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/143924. Acesso em: 22 oct. 2025.