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W.S.W. (William Samuel Ruschenberger

Wikipedia: W.S.W. (William Samuel Ruschenberger

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A Biographical Notice of George W. Tryon, Jr., Conservator of the Conchological Section of the Academy of Natural Sciences of Philadelphia
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Elements of Geology
Oil and Gas Exploration Techniques »

Elements of Natural History
Embracing Zoology, Botany and Geology for Schools, Colleges and Families »

Elements of Entomology
Prepared for the Use of Schools and Colleges »

A Notice of the Origin, Progress, and Present Condition of the Academy of Natural Sciences of Philadelphia
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W.S.W. (William Samuel Ruschenberger

Welcome to Boeklezers.nl

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