“CHEMICAL CONTROL OF UNDERGROWTHS IN ONION SEEDBED (Allium Cepa) IN CERRO PUNTA, PANAMA. 1998”. 2003. Ciencia Agropecuaria, no. 14 (September): 39-54. https://idiap.desarrollo-ojs1.metadatos.org/index.php/ciencia-agropecuaria/article/view/317.