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Bibliotheca Phycologica: Volume 029:Kofoid,C.A.:Plankton of the Illinois River 1894-1899.2 vols.bound in 1 vol.Urbana 1903-1908.(Bull.Illinois State Lab.,VI:2 & VIII:1).(Reprint 1977).55 plates.XVIII,VII,894 p.8vo. Hard Cover. (1251) 87.00 (ISBN 978-3-7682-1104-8)
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