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国产亚洲视频中文字幕-国产在线精彩亚洲久久免费视频-2019日日拍夜夜啪在线视频-欧美一级高清片  was founded in 1936 to support teaching and research at the University of California. The Arboretum occupies 100 acres along the banks of the old north channel of Putah Creek, in California's Central Valley. Our  include 22,000 trees and plants adapted to a Mediterranean climate, with hot, dry summers and cool, wet winters. The plants are arranged in a series of gardens that represent different geographic areas, plant groups, or horticultural themes.