Prediction of birch airborne pollen counts by examining male catkin numbers in Hokkaido, northern Japan

Author: Yasaka Michiyasu   Kobayashi Satoshi   Takeuchi Shinji   Tokuda Sawako   Takiya Mika   Ohno Yasuyuki  

Publisher: Springer Publishing Company

ISSN: 0393-5965

Source: Aerobiologia, Vol.25, Iss.2, 2009-06, pp. : 111-117

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