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Sotomayor-Ríos, A., Vélez-Fortuño, J., Woodbury, R., Schertz, K.F. and Sierra-Bracero, A. 1960. Description and Cytology of a Form of Signal Grass (Brachiaria brizantha Stapf.) and its Agronomic Behavior Compared to Guinea Grass (Panicum maximum Jack.). The Journal of Agriculture of the University of Puerto Rico. 44, 4 (Oct. 1960), 208–220. DOI:https://doi.org/10.46429/jaupr.v44i4.13809.