@book{72754,
	author = {UNESCO},
	title = {Plant-water relationships in arid and semi-arid conditions :},
	publisher = {UNESCO,},
	year = {1960},
	series = {Arid zone research,},
	address = {Paris :},
	note = {"The contents of this volume were made available to the participants in the Symposium on Plant-Water Relationships, organized jointly by Unesco and the Spanish authorities and held in Madrid in September 1959."}
}