Werne, Benjamin. Law and practice of the labor contract. - Chicago Callaghan [1957] - 2 volumes 25 cm LCCN: 57059488 Subjects--Topical Terms: Collective labor agreements--United States.Collective labor agreements Subjects--Geographic Terms: United States LC Class. No.: KF 3408 / .W48 Dewey Class. No.: 331.116 331.891