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 Revision of the Avian Genus 

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 Plankton of the San Joaquin 

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248. Britton. N. L . and J. N. Rose. The Cactaceae. De- 

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252. Bartsch. Paul. Experiments in the Breeding of Cer- 



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292. Weaver, John E. Root Development In the Grassland 

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295. Mohr. O, L.. and Chr. Wriedt. A New Type of He- 



reditary Brachyphalangy in Man. Octavo. 64 pp., 

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296. Key, Wilhelmine E. Heredity and Social Fitness: 



Study of Differential Mating in a Pennsylvania Family. 

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214. Clark. H. L. The Echlnoderm Fauna of Torres Strait : 

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268. Hyde, Walter W.'i^ Olympic Victor Monuments and 

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