共 15 条
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- [2] BALL IJ, 1973, THESIS U MINNESOTA
- [4] COCHRAN WW, 1972, SP262 NASA, P39
- [5] DUMKE RT, 1973, 72 WISC DEP NAT RES
- [6] GILMER DS, 1971, THESIS U MINNESOTA
- [8] JOHNSON R N, 1971, Minnesota Department of Natural Resources Game Research Project Quarterly Progress Report, V31, P23
- [9] KEITH LB, 1961, 6 WILDL MON
- [10] MARSHALL W. H., 1953, FLICKER, V25, P54