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Pruning Ornamental Shrubs and Trees
Tree Trunks
Herbaceous Aliens in the Arnold Arboretum
The Honeysuckles
The New International Code of Nomenclature for Cultivated Plants
Fall Courses of the Arnold Arboretum, 1968
The Mountain-Ashes
The Larz Anderson Bonsai Collection
Volunteer Keepers of the Arnold Arboretum: Effective Program Design Yields Reciprocal Benefits
Concerning the Registration of Cultuvar Names