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New York [u.a.]: McGraw-Hill, 1951
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New York Botanical Garden, 1966
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New York Botanical Garden, 1959
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American Chemical Society (ACS), 1933
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Informa UK Limited, 1973
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Informa UK Limited, 1973
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New York Botanical Garden, 1973
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Informa UK Limited, 1966
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Informa UK Limited, 1966
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Informa UK Limited, 1966
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New York Botanical Garden, 1966
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Informa UK Limited, 1965
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Informa UK Limited, 1965
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New York Botanical Garden, 1965
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Informa UK Limited, 1960
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Informa UK Limited, 1960
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New York Botanical Garden, 1960
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Informa UK Limited, 1959
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Informa UK Limited, 1958
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Informa UK Limited, 1958