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Contributions towards the knowledge of the migration of butterflies. American Museum novitates ; no. 1471

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By: Irving, Laurence - Tetens Nielsen, Astrid - Tetens Nielsen, Erik

Publication info: 1950

Holding Institution: American Museum of Natural History Library
Contributions towards the knowledge of the migration of butterflies

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By: Tetens Nielsen, Erik - Tetens Nielsen, Astrid - Irving, Laurence

Publication info: New York American Museum of Natural History [1950]

Holding Institution: American Museum of Natural History Library