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Incoming Resources
- West Virginia timber industry, an assessment of timber product output and use, 2007, Ronald J. Piva, Gregory W. Cook
- Nebraska timber industry, an assessment of timber product output and use, 2006, Ronald J. Piva and Dennis M. Adams
- Pulpwood production in the Northern Region, 2006, Ronald J. Piva
- Iowa timber industry--an assessment of timber product output and use, 2000, Ronald J. Piva and Dennis D. Michel