Biodiversity Heritage Library

By: Pennsylvania. Department of Public Instruction. - Ashley, Geo. H. (George Hall), - Crabtree, Fred. - Finegan, Thomas Edward, - MacFarland, John Horace, - Pinchot, Gifford, - Shoemaker, Henry W., - Sproul, William Cameron, - Stuart, Robert Young, - Watts, Ralph L. (Ralph Levi),

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Publication info: Harrisburg, 1922

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Holding Institution: Library of Congress

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