共 25 条
[1]
ANDERSON HARRY G., 1959, ILLINOIS NAT HIST SURV BULL, V27, P289
[2]
Anderson M. G., 1983, WILDLIFE SOC B, V11, P22
[3]
Baldassarre G.A., 1983, WILDLIFE SOC B, V11, P25
[4]
Bellrose F. C., 1976, DUCKS GEESE SWANS N
[5]
BOLEN EG, 1982, TRANS N AM WILDL NAT, V47, P528
[6]
BOSSENMAIER EF, 1958, WILDL MONOGR, V1
[7]
BULLER RJ, 1964, WATERFOWL TOMORROW, P209
[8]
Calder W., 1974, AVIAN BIOL, P259
[9]
Conover WJ, 1980, PRACTICAL NONPARAMET, V2
[10]
Fredrickson L.H, 1979, WATERFOWL WETLANDS I, P119