Flora boreali-americana, or, The botany of the northern parts of British America [Microform] : compiled principally from the plants collected by Dr. Richardson & Mr. Drummond on the late northern expeditions under command of Captain Sir John Franklin R.N. : to which are added (by permission of the Horticultural Society of London) those of Mr. Douglas from north-west America and of other naturalists / by Sir William Jackson Hooker
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