Template:Poelt, 1973a

• Poelt, J. 1974 ['1973']. Classification. Pages 599–632. In Ahmadjian, V. & Hale, M.E. (eds.), The Lichens. 697 pp. Academic Press, New York & London. ISBN 0120449501  
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  • RLL List # 88 / Rec.# 14848 / Rec.# 13399 – Recent Literature on Lichens