text by Elena Poniatowska, Salvador Arias, Salvador Montes Ahumada

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
METZTITLAN CANYON Biosphere Reserve BARRANCA DE METZTITLAN Reserva de la Biosfera	978-97O-93436-O-1 (97O-93436-O-2)	2002	Alicia