Additional information on the author H.A.N. Hallam.

Additional information on the author H.A. Hammelmann.

Additional information on the author H.A. Feisenberger.

Additional information on the author H. Montgomery Hyde.

Additional information on the author Gwyn Walters.

Additional information on the author Gwen Hampshire.

Additional information on the author Guy de la Bédoyère.

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Additional information on the author Graham Pollard.

Additional information on the author Gordon Ray.