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Annual technical report of the National Plant Materials Center - National Plant Materials Center (U.S.) (Soil Conservation Service, U.S. Dept. of Agriculture, 1981)

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Arnoldia - Arnold Arboretum. (Arnold Arboretum, Harvard University, 1978)

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da lian di qu zhi wu zhi - Dalian zi ran bo wu guan. (1982)

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jiang xi sheng lu shan zi ran bao hu qu sheng wu duo yang xing kao cha yu yan jiu - Liu, Xinzhong & Wang Lang. (ke xue chu ban she)

la han zhong zi zhi wu ming cheng : di er ban 拉汉种子植物名称:第二版 - ke xue yuan bian yi chu ban wei yuan hui 科学院编译出版委员 会 (ke xue chu ban she 科学出版社, 1974)

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Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)

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The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1977)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1978)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1985)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1985)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1985)

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Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 1993)

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