ALLERGY AND ASTHMA IN THE SOUTHWESTERN UNITED STATES 

careless weed image

Illustrations by Lucretia Breazeale Hamilton, from An Illustrated Guide to Arizona Weeds, by Kittie F Parker. Copyright 1972 by the Arizona Board of Regents.  Reprinted by Permission.  These illustrations may not be reproduced or downloaded without the express permission of the University of Arizona Press

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