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Start Over Subjects Academy of Natural Sciences of Philadelphia. ✖Remove constraint Subjects: Academy of Natural Sciences of Philadelphia. Titles Act of incorporation and by-laws of the Academy of Natural Sciences of Philadelphia ✖Remove constraint Titles: Act of incorporation and by-laws of the Academy of Natural Sciences of Philadelphia Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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  • Act of incorporation and by-laws of the Academy of Natural Sciences of Philadelphia1