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Start Over You searched for: Catalog Issue Year Decade 1940 - 1949 Remove constraint Catalog Issue Year Decade: 1940 - 1949 Sudoc Stem I 49.6 Remove constraint Sudoc Stem: I 49.6

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21. Deer Flat National Wildlife Refuge, Idaho.

25. Lacassine National Wildlife Refuge, La.

26. Lake Mason National Wildlife Refuge, Mont.

27. Lenore Lake National Wildlife Refuge, La.

30. Reel foot Notional Wildlife Refuge, Tenn.