@book{63923,
	author = {Conklin, Harold C.},
	title = {El estudio del cultivo de roza =},
	publisher = {Unión Panamericana},
	year = {1963.},
	series = {Estudios y monografías},
	address = {Washington, D.C.},
	note = {Opposite pages numbered in duplicate (30 p. of 2d group and p. 1-30 of 3d group)}
}