共 77 条
[1]
[Anonymous], WILDLIFE TRUST ANN R
[2]
[Anonymous], RING NECKED DUCK NE
[3]
BARTONEK JAMES C., 1965, CAN FIELD NATUR, V79, P15
[4]
BEER J, 1964, WILDFOWL TRUST ANNU, V15, P50
[5]
BELLROSE FRANK C., 1959, ILLINOIS NAT HIST SURV BULL, V27, P235
[6]
BELLROSE FRANK C, 1961, ILLINOIS NAT HIST SURV BULL, V27, P391
[7]
Bennett L.J., 1938, The blue-winged teal: its ecology and management
[8]
Bossenmaier E.F., 1954, T NORTH AMERICAN WIL, V19, P163
[9]
Boyd H., 1962, P85
[10]
BUSS IO, 1952, T N AM WILDL C, V17, P269