共 41 条
[21]
HANSON HC, 1944, T WISCONSIN ACAD SCI, V36, P105
[22]
Hatfield D. M., 1940, Journal of Mammalogy, V21, P29, DOI 10.2307/1374655
[23]
HAYNES BC, 1947, TECHNIQUES OBSERVING
[24]
KEEVER C, 1950, ECOL MONOGR, V20, P229
[25]
LUTZ HJ, 1928, YALE U SCH FORESTRY, V22
[26]
OOSTING H. J., 1942, AMER MIDLAND NAT, V28, P1, DOI 10.2307/2420696
[28]
RAUP HUGH M., 1940, JOUR ARNOLD ARBORETUM, V21, P266
[30]
SMITH CHARLES CLINTON, 1940, ECOL MONOGR, V10, P421, DOI 10.2307/1948513