Notes on the Amphibians of Venango County, Pennsylvania

@article{Swanson1948NotesOT,
  title={Notes on the Amphibians of Venango County, Pennsylvania},
  author={Paul Loren Swanson},
  journal={American Midland Naturalist},
  year={1948},
  volume={40},
  pages={362}
}
  • P. Swanson
  • Published 1 September 1948
  • Environmental Science
  • American Midland Naturalist
Venango County is situated about midway between Pittsburgh and Erie. Much of its 675 square miles has been glaciated, and the general topography is hilly. The Allegheny River flows through the county, and, with its tributaries, has cut deep valleys in the original plateau. The lowest elevation is about 870 feet above sea level, and the highest point just under 1600 feet. The average last killing frost of the winter falls on May 16, and the first killing frost in the fall, October 3. This makes… 

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