1.

Notes and Queries - volume 7, 3rd Series - Page 41

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The DePauw, September 27, 2005

1.

Notes and Queries - volume 10, 2nd Series - Page 472

1.

Notes and Queries - volume 4, 3rd Series - Page 410

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Theodore F. Koch Collection ; Koch Collection

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Risk analysis of the Ruddy Duck Oxyura jamaicensis (Gmelin, 1789):Risk analysis report of non-native organisms in Belgium

2.

Risk analysis of the Ruddy Duck Oxyura jamaicensis (Gmelin, 1789):Risk analysis report of non-native organisms in Belgium

3.

Risk analysis of the Ruddy Duck Oxyura jamaicensis (Gmelin, 1789):Risk analysis report of non-native organisms in Belgium