Wigham, Eric L. Trade unions / Eric L.Wigham. - New York : Oxford University Press, 1956. - 277 p. : 18 cm. - The Home university library of modern knowledge, 229 . LCCN: 57000352 Nat. Bib. No.: GB56-12765 Subjects--Topical Terms: Labor unions--Great Britain. LC Class. No.: HD6664 / .W48 Dewey Class. No.: 331.88 / WIT 1956.