@book{9707,
	author = {Duverger, Maurice,},
	title = {Party politics and pressure groups:},
	publisher = {Nelson,},
	year = {1972.},
	series = {Nelson's political science library},
	address = {London,},
	note = {Translation of Les partis politiques et les groupes de pression, which was first published as part of the author's Sociologie politique.}
}