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20. PORTER, HUGH J. 



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U.S. Nat. Mus. 97, 461 p. 



23. 1925. The spider crabs of America. Bull. 



U.S. Nat. Mus. 129, 613 p. 



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families Euryalidae, Portunidae, Atel- 

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25. REES, GEORGE H. 



1959. Larval development of the sand crab 

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26. RYAN, EDWARD PARSONS. 



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27. WILLIAMS, AUSTIN B. 



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