@book{4641,
	author = {Bongcam Vásquez, Elkin},
	title = {Guía para compostaje y manejo de suelos },
	publisher = {Convenio Andrés Bello},
	year = {2003},
	series = {Ciencia y tecnología },
	address = {Bogotá },
	edition = {1a. edición }
}