Britton, Nathaniel Lord and Brown, Addison "an Illustrated Flora of the Northern United States, Canada, and the British Possessions", published by C. Scribner's Sons, 1913.
布里顿，纳撒尼尔和布朗勋爵，艾迪生图记“植物区系的北美国，加拿大和英国的占领”由c。斯克里布纳的儿子，1913年出版。
Britton, Nathaniel Lord and Brown, Addison "an Illustrated Flora of the Northern United States, Canada, and the British Possessions", published by C. Scribner's Sons, 1913.
布里顿，纳撒尼尔和布朗勋爵，艾迪生图记“植物区系的北美国，加拿大和英国的占领”由c。斯克里布纳的儿子，1913年出版。
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