@book{97434,
	author = {Pulido, Ma. Teresa P. and Koch, Stephen D.},
	title = {Guía ilustrada de las plantas del cerro Tetzcutzingo :},
	publisher = {UNAM, Instituto de Biologia,},
	year = {1992},
	series = {Cuadernos del Instituto de Biología},
	address = {México, D.F. :}
}