共 35 条
[31]
SANFORD KS, 1926, GEOGR J, V68, P200
[32]
Schroter C., 1926, PFLANZENLEBEN ALPEN
[33]
STEPHENSON J, 1922, P ZOOL SOC, P1109
[35]
TYRRELL JW, 1897, SUBARCTICS CANADA, P260