共 12 条
- [1] Allman D., 1946, Irish For., V3, P92
- [2] BORG K, 1952, SVENSKA JAG MEDD, V17, P1
- [3] CRAIG J, 1871, T SCOTT ARBOR SOC, V6, P233
- [4] Helminen M., 1966, Suomen Riista, V18, P133
- [6] Hewson R., 1962, Proceedings of the Zoological Society of London, V139, P515
- [7] Lindlof B., 1974, Viltrevy Stockholm, V9, P27
- [8] Loisa K., 1968, Ann Zool Fenn, V5, P220
- [9] DIGESTION AND INTAKE OF WINTER FOODS BY WILD PTARMIGAN IN ALASKA [J]. CONDOR, 1973, 75 (03): : 293 - 300
- [10] WINTER DIETS, GUT LENGTHS, AND INTERSPECIFIC COMPETITION IN ALASKAN PTARMIGAN [J]. AUK, 1974, 91 (04): : 737 - 746