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by Roger Ling
by Ling, Roger; Ling, Lesley
by Ling, Roger
by Ling, Roger; Arthur, Paul; Clarke, Georgia; et al.
by Ling, Frank W.; Laube, Douglas W.; Nolan, Thomas E.; et al.
by Beckmann, Charles R. B.; Herbert, William; Laube, Douglas; et al.
by Boethius, Axel (Author); Ling, Roger (Revised by); Rasmuss, Tom (Revised by)
by Boethius, Axel; Ling, Roger; Rasmuss, Tom; et al.