1.
Gutiérrez Núñez NL. Salvador Sánchez Colín and the Extension Service of the State of Mexico: Agricultural Development and Green Revolution (1952-1957). RH [Internet]. 2023 Jan. 1 [cited 2024 Apr. 28];(87):1-30. Available from: https://www.revistas.una.ac.cr/index.php/historia/article/view/17909