Switzerland
USA
Biodiversity Heritage Library (BHL) [1]
USA
- Harvard University Botany Libraries | Cambridge, MA
- Harvard University Botany Libraries * Cambridge, MA [1] [2]
- Harvard Botany Libraries * Farlow Reference Library of Cryptogamic Botany [1] [2]
- Harvard Botany Libraries * Library of the Arnold Arboretum [1]
- Harvard Botany Libraries * Library of the Gray Herbarium [1] [2] [3] [4] [5]
- Harvard Botany Libraries * The Economic Botany Library of Oakes Ames [1]
- Harvard Botany Libraries * The Orchid Library of Oakes Ames [1] [2] [3] [5] [6]
- The Council on Botanical and Horticultural Libraries, Inc. (CBHL)
Biodiversity Heritage Library (BHL) [1]