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- Owls : the silent fliers / by Lawrence, R. D.(Ronald Douglas),1921-;
- Subjects: Owls;
- © c1997., Key Porter Books,
- The natural history of Canada / by Lawrence, R. D.(Ronald Douglas),1921-;
- Bibliography: p. 303.
- Subjects: Natural history;
- © 1988., Key Porter Books,
Results 1 to 2 of 2