共 22 条
[1]
ANKNEY CD, 1979, AUK, V96, P68
[2]
AOAC, 1993, OFFICIAL METHODS ANA
[3]
Bellrose F. C., 1976, DUCKS GEESE SWANS N
[4]
Brandt H, 1943, ALASKA BIRD TRAILS E
[5]
Bryant D.M., 1975, Wildfowl, V26, P20
[6]
CONOVER H. B., 1926, AUK, V43, P162
[7]
Fay F. H., 1961, WILDFOWL, V12, P70
[8]
Gill, 1979, STUDIES AVIAN BIOL, V2, P110
[9]
HANSON HC, 1962, 12 ARCH I N AM TECH
[10]
Jones Jr R.D., 1965, WILDFOWL, V16, P83