共 4 条
[1]
BASSETT, 1947, FUR CANADA, V12, P21
[2]
RICHARDS, 1953, WISCONSIN CONSERV DE, V6, P1
[3]
SHELDON, 1949, J MAMM, V30, P236
[4]
SKARMAN, 1950, VARA PALSDJUR, V21, P337