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Rusts of Costa Rica
Published in Botanical Gazette, in 1919, in volume 67, issue 2, pages 184
Created: 2017-03-14, modified: 2017-03-14
New bees from Costa Rica
Published in Entomological News Philadelphia, in 1917, in volume 28, pages 200
Created: 2012-05-03, modified: 2012-05-03
Notes on Costa Rican birds
Published in Zoologica, in 1914, in volume 1, issue 18, pages 325-343
Created: 2016-11-07, modified: 2016-11-07
Arachnida from Costa Rica
Published in Proc. Acad. nat. Sci. Philad., in 1909, in volume 61, pages 194-234
Created: 2010-11-18, modified: 2021-04-05
Some Costa Rican bees
Published in Transactions of The American Entomological Society Philadelphia, in 1906, in volume 32, pages 157-163
Created: 2012-08-13, modified: 2012-08-13