Carrot necrotic dieback virus
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The Three-North Shelter Forest is an important ecological defense of Beijing-Tianjin-Hebei area. About four-fifths of poplar… (More)
In this paper, we present an examination of ICT resources created by pre-service science teachers. After a great deal of… (More)
brown leaf spots; or diffuse yellow blotches. Severely affected plants have rotten basal stems and stumps and black, rotten roots… (More)
Polar ordination is used to project all pixels in Landsat TM band space onto a single axis whose endpoints are the centroids of… (More)
The impact of browsing by introduced brushtail possums on mixed beech broadleaved forests in South Westland was estimated from… (More)