kw.\*:("CEDAR-VALLEY-FORMATION")
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THE GENERA CALYPTOSPORITES, GRANDISPORA (.), AND SAMARISPORITES FROM THE CEDAR VALLEY FORMATION (MIDDLE DEVONIAN) OF IOWA AND MISSOURI, U.S.A. = LES GENRES CALYPTOSPORITES, GRANDISPORA ET SAMARISPORITES DE LA FORMATION CEDAR VALLEY (DEVONIEN MOYEN) DE L'IOWA ET DU MISSOURI, U.S.A.BRADSHAW BRUCE P II; NICHOLS DOUGLAS J ED.1982; PALYNOLOGY; ISSN 0191-6122; USA; DA. 1982; VOL. 6; PP. 274Conference Paper
