Haworthia cooperi (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Haworthia cooperi" in German language version.

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archive.org

In: W. Wilson Saunders (Hrsg.): Refugium Botanicum; or, Figures and Descriptions from Living Specimens of Little Known of New Plants of Botanical Interest. Band 4, London 1871, Tafel 233 (online).