An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic ocean westward to the 102d meridian /
New York :
New York Botanical Garden,
|Edition:||2nd ed.--rev. and enl.|
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QK117 .B8 1947 v.2
QK117 .B8 1947 v.3