W.S. W. (William Samuel Ruschenberger

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W.S. W. (William Samuel Ruschenberger

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W.S. W. (William Samuel Ruschenberger
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A Notice of the Origin, Progress, and Present Condition of the Academy of Natural Sciences of Philadelphia
A Notice of the Origin, Progress, and Present Condition of the Academy of Natural Sciences of Philadelphia
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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
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
Elements of Geology
Prepared for the Use of Schools and Colleges / by W. S. W. Ruschenberger; From the Text of F. S. Beudant, Milne Edwards, and Achille Comte »
 
 
 
 
 

Elements of Natural History
Elements of Natural History
Embracing Zoology, Botany and Geology for Schools, Colleges and Families Volume 1 »
 
 
 
 
 

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