@book{114829,
	author = {Hildegart,},
	title = {Malthusismo y neomalthusismo },
	publisher = {Javier Morata, },
	year = {1932.},
	address = {Madrid : },
	url = {https://bnedigital.bne.es/bd/es/viewer?id=b5fe5fe3-4906-4e15-be5a-5ce4c751b9d9}
}