• 4 Journals, Magazines, Newspapers

• 2 Forests and forestry
• 1 Central Hardwood Forest Conference
• 1 Hardwood industry
• 1 Hardwoods
• 1 Northeastern Forest Experiment Station (Radnor, Pa.)
• 1 Publishers' catalogs
• 1 Pulpwood industry

• 2 United States. Forest Service. Northeastern Research Station
• 1 Central Hardwood Forest Conference
• 1 North Central Forest Experiment Station (Grand Rapids, Minn.)
• 1 United States. Forest Service. Northern Research Station

• 4 English

• 2 Northeastern States
• 2 United States
• 1 East (U.S.)

• 2 Statistics
• 1 Bibliography
• 1 Catalogs
• 1 Congresses

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