@book{64670,
	author = {DIA INTERNACIONAL DE LOS TRABAJADORES},
	title = {Manifiesto CCOO y UGT},
	publisher = {CCOO, Madrid],},
	year = {2000},
	address = {[Madrid :},
	url = {https://docpublicos.ccoo.es/cendoc/073491Manifiesto1Mayo2000.pdf}
}