P. Roth

Sampling forest regeneration across northern U.S. forests: filling a void in regeneration model input
McWilliams, W., Charles D. Canham, Randall S. Morin, K. Johnson, P. Roth, and J. A. Westfall. 2012. “Sampling Forest Regeneration across Northern U.S. Forests: Filling a Void in Regeneration Model Input”. In Moving from Status to Trends: Forest Inventory and Analysis Symposium. Washington, D.C.: USDA Forest Service. http://www.fs.fed.us/nrs/pubs/gtr/gtr_nrs-p-105.pdf.