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By:Type: ArticleIn: Lasca leavesVolume: 25Series:Issue:Date: 1975Page Range: 66-67Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects: Botany -- Study and teaching -- Activity programs Environmental education -- Activity programs Nature study -- Activity programs -- California
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By: Call, Ronald B.Type: ArticleIn: Lasca leavesVolume: 24Series:Issue:Date: 1974Page Range: 38-39Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects: Botany -- Study and teaching -- Activity programs Environmental education -- Activity programs Nature study -- Activity programs -- California