Vicente-Chandler J, Caro-Costas R, Boneta EG. High Crop Yields Produced with or without Tillage on 3 Typical Soils of the Humid Mountain Region of Puerto Rico. JAUPR [Internet]. 1966 Apr. 1 [cited 2024 Nov. 22];50(2):146-50. Available from: https://revistas.upr.edu/index.php/jaupr/article/view/3721