Bartley, Floyd
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The primeval forests of a periglacial area in the Allegheny.. 

Bulletin of the Ohio Biological Survey ; N.S. 1,1
Copies:  Zentrale:Magazin Zs fc 2297-1
 
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2

Bradley's Spleenwort in Ohio:

Bartley, Floyd
American Fern Journal.  34 (1944)  2 - p. 62 ff. , 1944
 
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