@book{51497,
	author = {Ford, James Alfred, and Teaching Seminar in the Methods of Establishing Chronological Sequences of Pre-Columbian Cultures in the Americas},
	title = {A quantitative method for deriving cultural chronology},
	publisher = {Pan American Union,},
	year = {1962.},
	series = {Pan American Union. Dept. of Social Affairs. Technical manual,},
	address = {Washington,},
	note = {Issued also in Spanish.}
}