@book{7778,
	title = {A pre-view of policy sciences},
	publisher = {U.M.I. Books on demand},
	year = {1993. },
	address = {Ann Arbor (Mich.)},
	edition = {Fac-sim. ed.},
	url = {http://catalogue.bnf.fr/ark:/12148/cb35616902x}
}