共 6 条
- [1] BURROWS WH, 1939, USDA525 CIRC
- [2] DRIGGERS JC, 1954, FLORIDA AGR EXP STA, V551
- [3] KING DF, 1939, 82 AL AGR EXP STA CI
- [4] KING DF, 1954, 116 AL AGREXP STA CI
- [5] QUINN JP, 1936, J HEREDITY, V28, P31
- [6] Warren D. C, 1953, PRACTICAL POULTRY BR