Foundation presidency
Article
1969
Lasca leaves
19
26
California Arboretum Foundation , Haagen-Smit, A. J. (Arie Jan), 1900-1977 , Hetherington, Ernest E
The Arboretum Library at the Los Angeles County Arboretum and Botanic Garden
English
Arcadia, Calif, California Arboretum Foundation, 1950-1976
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