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By: Noble, WilfredType: ArticleIn: Lasca leavesVolume: 14Series:Issue: Autumn 1964Date: 1964Page Range: 74-75Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects: Guaiac Plants -- Effect of photochemical smog on -- Calif Smog -- California -- Los Angeles County
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By: Hanson, George P. - Thorne, LindaType: ArticleIn: Lasca leavesVolume: 20Series:Issue:Date: 1970Page Range: 35-36Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects: Plants -- Effect of photochemical smog on Smog -- California -- Los Angeles County Tree planting -- California