Additions to the flora of Washtenaw County, Michigan
Subtitle: [I], II & III
Published: 1936
Language: eng
Notes: I-Papers Mich. Acad. Sci., Arts, Letters xxi: 81 - 87. 1936.

II-Papers Mich. Acad. Sci. Arts & Letters 22: 91 - 94. 1937.

III-Papers Mich. Acad. Sci. Arts & Letters 24(1): 17 - 23. 1939.