共 7 条
- [1] Davies R. W, 1975, VERH INT VEREIN LIMN, V19, P2816
- [2] LIFE-HISTORY, GROWTH, AND AGE STRUCTURE OF NEPHELOPSIS-OBSCURA-VERRILL-1872 (HIRUDINOIDEA) IN ALBERTA [J]. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 1977, 55 (03): : 620 - 627
- [4] ELLIOT JM, 1971, FRESHWATER BIOL ASS, V25, P1
- [5] EVERETT RP, 1974, THESIS U CALGARY
- [6] REYNOLDSON TB, 1974, THESIS U CALGARY
- [7] Siegel S., 1956, NONPARAMETRIC STAT, P1