V. 1. April 1942 -- v. 2. March 1943., [Prepared by the Oxford sub-centre., "B. R. 507-B.R. 507A.", Main Heritage Compact General, DR417 .G7 1942 vol. 2, Book, vol. 2, Item-ID: i25928867, BIB-ID: 2757842, Includes bibliographical references., Also issued online.