共 13 条
[1]
CUMMINS KENNETH W., 1962, AMER MIDLAND NAT, V67, P477, DOI 10.2307/2422722
[6]
Eriksen C. H, 1964, VERH INT VER LIMNOL, V15, P903
[7]
FLINT OLIVER S., 1960, ENT AMER, V40, P1
[8]
HOWARD FO, 1975, THESIS MICH STATE U