@book{6990,
	title = {Una agenda para hoy :},
	publisher = {The Nature Conservancy :},
	year = {2006},
	address = {San José, Costa Rica :},
	note = {Estrategias del Plan Ecorregional de las Selvas Maya, Zoque y Olmeca},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/7670.pdf}
}