Showing 1 - 14 results of 14 for search 'Johannsen, O. A. (Oskar Augustus), 1870-1961', query time: 0.04s Refine Results
  1. 1
    Genera of plancton organisms of the Cayuga lake basin /

    Genera of plancton organisms of the Cayuga lake basin / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1915
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  2. 2
    Spruce bud worm and spruce leaf miners /

    Spruce bud worm and spruce leaf miners / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1913
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  3. 3
    The fungus gnats of North America, part II /

    The fungus gnats of North America, part II / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1910
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  4. 4
    Insect notes for 1909 /

    Insect notes for 1909 / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1910
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  5. 5
    Insect notes for 1911 /

    Insect notes for 1911 / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1911
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  6. 6
    The fungus gnats of North America, part IV /

    The fungus gnats of North America, part IV / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1912
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  7. 7
    Insect notes for 1912 /

    Insect notes for 1912 / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1912
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  8. 8
    Potato flea-beetle (Epitrix cucumeris) /

    Potato flea-beetle (Epitrix cucumeris) / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1913
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  9. 9
    The fungus gnats of North America, part I /

    The fungus gnats of North America, part I / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1909
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  10. 10
    Embryology of insects and myriapods : the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching /

    Embryology of insects and myriapods : the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1941
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  11. 11
    Insect notes for 1910 /

    Insect notes for 1910 / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1911
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  12. 12
    The fungus gnats of North America, part III /

    The fungus gnats of North America, part III / by Johannsen, O. A. (Oskar Augustus), 1870-1961

    Published 1911
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  13. 13
    Medical entomology : a survey of insects and allied forms which affect the health of man and animals /

    Medical entomology : a survey of insects and allied forms which affect the health of man and animals / by Riley, William A. (William Albert), 1876-1963

    Published 1938
    Other Authors: “…Johannsen, O. A. (Oskar Augustus), 1870-1961…”
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  14. 14
    May flies and midges of New York. : Third report on aquatic insects. A study conducted at the entomologic field station, Ithaca, N.Y. /

    May flies and midges of New York. : Third report on aquatic insects. A study conducted at the entomologic field station, Ithaca, N.Y. /

    Published 1905
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