A partial pollution solution: plant trees!
Hanson, George P. Thorne, Linda
Article
1970
Lasca leaves
20
35-36
Plants -- Effect of photochemical smog on , Smog -- California -- Los Angeles County , Tree planting -- California
The Arboretum Library at the Los Angeles County Arboretum & Botanic Garden
English
Arcadia, Calif, California Arboretum Foundation, 1950-1976
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