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2. On insects visiting Trillium flowers;Fukuda;Essays and Studies of Tokyo Woman's Christian College,1961
3. Variation and evolution in natural populations of Trillium kamtschaticum Pall;Fukuda;Essays and Studies of Tokyo Woman's Christian College,1962
4. Evolution and variation in Trillium. V. A list of chromosome composition in natural populations of Trillium kamtschaticum Pall;Fukuda;Jour. Fac. Sci. Hokkaido Univ., Ser. V,1958
5. An exact test for randomness of mating;Haldane;J. Genet.,1954