1. The practice of silviculture: with particular reference to its application in the United States Creator: Hawley, Ralph C. 1880- Collection: Core Historical Literature of Agriculture Publisher: John Wiley & Sons, Inc., Publication Place: New York : Date: 1921 Format: Book
2. Forest protection Creator: Hawley, Ralph C. 1880- Collection: Core Historical Literature of Agriculture Publisher: Chapman & Hall, Limited, Publication Place: London : Date: 1937 Format: Book