Additional information on the author Ronald Mansbridge.

Additional information on the author Roger Stoddard.

Additional information on the author Roger Senhouse.

Additional information on the author Roger Peattie.

Additional information on the author Roger Lewis.

Additional information on the author Roger Gaskell.

Additional information on the author Roger Brooks.

Additional information on the author Rodney Engen.

Additional information on the author Roderick Cave.

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