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A New palm from Costa Rica
Published in Journal of The Washington Academy of Sciences, in 1939, in volume 29, issue 4, pages 141-146
Salmon psychology
Published in Jour Washington Acad Sci, in 1939, in volume 29, pages 1-14
Crabs as food in India
Published in Journal of The Washington Academy of Sciences, in 1939, in volume 29, pages 41-44