SPAIN, Gene L.; VÉLEZ SANTIAGO, Jaime. Napier Grass Harvest Readiness. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 57, n. 4, p. 300–306, 1973. DOI: 10.46429/jaupr.v57i4.10728. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/10728. Acesso em: 26 apr. 2024.