共 30 条
[1]
AULTFATHER WA, 1966, WOOD DUCK MANAGEMENT, P23
[3]
BALL IJ, 1971, THESIS U MINNESOTA
[4]
BALL IJ, 1973, THESIS U MINNESOTA
[5]
BATSCHELET E, 1972, ANIMAL ORIENTATION N, P61
[6]
BELLROSE FRANK C., 1964, J WILDLIFE MANAGE, V28, P661, DOI 10.2307/3798781
[7]
BRINKMAN KA, 1975, USDA486 FOR SERV AGR
[8]
COWARDIN LM, 1973, 168 US FISH WILDL SE
[9]
Cringan A.T., 1971, Transactions N Am Wildl nat Resour Conf, VNo. 36, P296