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Armatocereus arduus (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Armatocereus arduus" in German language version.

refsWebsite
Global rank German rank
1cactuspro.com
low place
low place

cactuspro.com

  • Friedrich Ritter: Kakteen in Südamerika – Ergebnisse meiner 20jährigen Feldforschung. Band 4. Friedrich-Ritter-Selbstverlag, Spangenberg 1981, S. 1271 (online).