Template:Backeberg & Knuth, 1936

• Backeberg, C. & Knuth, F.M. 1936 ("1935") Kaktus-ABC, en Haandbog for Fagfolk og Amatorer. København. 432 pp. PDF  

• Syntax: {{Backeberg & Knuth, 1936}} or {{Backeberg & Knuth, 1936|page(s), e.g. "12" or "12–15"}}

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