LA. REAL SOCIEDAD ESPAÑOLA DE HISTORIA NATURAL 61 



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Anniial Report. 



Memoirs. 



Prize Essay Contest. 



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Anniial Report. 



Biilletin. 



Geological and Natural Historf Survey. 



Natural History Siirvey. 



S pedal Püblication. 

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Annual Report. 



Bulletin. 

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John Hopkins University Circular. 



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