1.
雑誌 |
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2.
雑誌 |
Ohio Agricultural Experiment Station
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3.
雑誌 |
Michigan Agricultural Experiment Station, Michigan State College
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4.
雑誌 |
Agricultural Experiment Station, Purdue University
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5.
雑誌 |
North Carolina Agricultural Experiment Station
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6.
雑誌 |
中央気象台 ; 柿岡地磁気観測所
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7.
雑誌 |
University of Maine, Agricultural Extension Service
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8.
雑誌 |
the Connecticut Agricultural Experiment Station
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9.
雑誌 |
Royal Meteorological Society (Great Britain)
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10.
雑誌 |
Colunmbia University
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