Panshin, Alexis J. and Carl de Zeeuw. Textbook of Wood Technology: Structure, Identification, Properties, and Uses of the Commercial Woods of the United States and Canada. 4th ed. McGraw-Hill Series in Forest Resources. New York: McGraw-Hill Book Co., 1980.

Panshin, Alexis J. and Carl de Zeeuw. Textbook of Wood Technology: Structure, Identification, Properties, and Uses of the Commercial Woods of the United States and Canada. 4th ed. McGraw-Hill Series in Forest Resources. New York: McGraw-Hill Book Co., 1980.