- an article in the New York Times
by THOMAS LEO OGREN
Allergenic Properties of Urban Forests Der Spiegel Translation Landscaping clears air Tulare City Schools and Tulare County Asthma Partner to Create a Low Allergy School Ground War & Peace - A Gardener's Perspective Selecting Landscape Trees with Asthmatics and Allergy Sufferers in Mind Tree, Shrubs & Urban Allergies Poway Valley Garden Club Newsletter (excerpt) March 2002 Issue Your Earth: Friday, May 18th, 2001
