@book{246300,
	author = {Marsden, C.},
	title = {Mammillaria : cultivation and characteristics},
	publisher = {Cleaver - Hume Press},
	year = {1957},
	address = {Londres},
	note = {Cacticulture Series Book 2  Donación Dres. Beat E. Leuenberger y Silvia Arroyo}
}