Marquez-Berber, S. R., C. Torcuato-Calderon, G. Almaguer-Vargas, A. V. Ayala-Garay, J. Aguilar-Avila, and A. K. Gardezi. “THE ENVIRONMENT-FRIENDLY SMALL FARMERS AT THE CENTRAL HIGHLANDS OF MEXICO”. European Scientific Journal, ESJ, Vol. 11, no. 10, Nov. 2015, https://eujournal.org/index.php/esj/article/view/6441.