EVANS, Alexander W.
EVANS, Alexander W. Contributions from the National Herbarium. Volume 20, Part 8. The North American Species of Asterella.  Washington. Smithsonian Institution. 1920.  
(250 x 158). pp, (vi), 247-312, (4). Ex library. with small stamp on cover else contents clean. Pages uncut and unopened. Grey paper covers slightly faded and chipped to edges. Small loss to foot of rear cover.
Stock ref: 1654
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