ROSENDAHL, CARL OTTO.
A guide to the spring flowers of Minnesota, by Carl Otto Rosendahl and Frederick K. Butters. 6th ed.
ROSENDAHL, CARL OTTO. A guide to the spring flowers of Minnesota, by Carl Otto Rosendahl and Frederick K. Butters. 6th ed. © 30Dec31; A48193. Frederick G. Rosendahl (C of C. O. Rosendahl); 3Sep59; R241831.
Frederick G. Rosendahl|C of C. O. Rosendahl