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