An experimental dissertation on the rhus vernix, rhus radicans and rhus glabrum : commonly known in Pennsylvania by the names of poison-ash, poison-vine and common sumach / by Thomas Horsfield, of Bethlehem, Pennsylvania, member of the Medical and Chemical Societies of Philadelphia.

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An experimental dissertation on the rhus vernix, rhus radicans and rhus glabrum : commonly known in Pennsylvania by the names of poison-ash, poison-vine and common sumach / by Thomas Horsfield, of Bethlehem, Pennsylvania, member of the Medical and Chemical Societies of Philadelphia.