Stockholm: P.A. Norstedt & Söner, nd . First edition. single sheet. Original mid-twentieth century color-printed lithograph; untrimmed showing printer's registration marks. (29.5 x 41.25 inches). Very Good condition with two small edge tears and small tide mark along edge.
A fine large format scientific wall chart showing 27 illustrations of the molecular structures of various algae in microscopic detail. Lithographed and printed in four colors by Bengtsons Litografiska A.B. Penciled notation on lower left (OHH53), in all probability identifying the publication date. Very Good. Item #7245