1. A history of birds Creator: Pycraft, W. P., b. 1868. Collection: Core Historical Literature of Agriculture Publisher: Methuen & Co., Publication Place: London : Date: 1910 Format: Book
2. The avian egg Creator: Romanoff, Alexis Lawrence, 1892-1980. Collection: Core Historical Literature of Agriculture Publisher: J. Wiley, Publication Place: New York : Date: 1949 Format: Book