Britton, N.L. and Addison Brown <br/><br/>
An illustrated flora of the Northern United States, Canada and the British possessions 

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 - New York-USA  New York Botanical Garden  1943 
 - v.1       
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Flora--USA--Canada--Colonias Britanicas--Ophioglossaceae--Polygonaceae--<br/>Botanica