...
A Conservation Catalog. Pennsylvania Conservation Partnership. Pennsylvania Conservation Partnership. 29 Oct. 2007 <http://www.envirothonpa.org/documents/conscatalog.pdf>.
Great Fishing Needs Great Habitat. PA Fish and Boat Commission. 1997. 29 Oct. 2007 <http://www.fish.state.pa.us/anglerboater/2001/jf2001/greathab.htm>.
Haberstock, Alan E., et al. "METHOD TO IDENTIFY EFFECTWE RIPARIAN BUFFER WIDTHS FOR ATLANTIC SALMON HABITAT PROTECTION1." Journal of the American Water Resources Association 36.6 (2000): 1271-86.
Lutz, Karl J. A Fish and Livestock Tale. PA Fish and Boat Commission. PA Fish and Boat Commission. 8 Nov. 2007 <http://www.fish.state.pa.us/anglerboater/2001/01_nov-dec/AFishandLivestockTale.pdf>.
The Basics of Water Pollution. PA Fish and Boat Commission. PA Fish and Boat Commission. 29 Oct. 2007 <http://www.fish.state.pa.us/anglerboater/2001/jf2001/waterpoll.pdf>.