Friederich, Carl J. (1950). Constitutional government and democracy : theory and practice in Europa and America / by Carl J. Frederich. London :: Ginn and Company,.
Friederich, Carl J. Constitutional government and democracy : theory and practice in Europa and America / by Carl J. Frederich. London :: Ginn and Company,, 1950
Friederich, Carl J. Constitutional government and democracy : theory and practice in Europa and America / by Carl J. Frederich. London :: Ginn and Company,, 1950.