Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie - Engler, Adolf, 1844 -1930 (Schweizerbart [etc.], 1912)

Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie - Engler, Adolf, 1844 -1930 (Schweizerbart [etc.], 1911)

Catalogue of the African plants - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees, 1896)

Catalogue of the African plants - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees, 1896)

Catalogue of the African plants - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees, 1900)