1. Where has all the white oak gone?;Abrams;BioScience,2003
2. Historical variation in fire, oak recruitment, and post-logging accelerated succession in central Pennsylvania;Abrams;Bulletin of the Torrey Botanical Club,1992
3. Ecoregions of north America, 1:15,000,000 scale map (rev.);Bailey,1997
4. Reproductive mode and mechanisms for self-replacement of northern red oak – a review;Crow;Forest Science,1988
5. Forest Cover Types of the United States and Canada;Eyre,1980