Contribution[s] from the Botanical Survey of Nebraska.

Mode of access: Internet.Title varies: nos. 1-7, 1892-1904, Botanical survey of Nebraska; conducted by the Botanical Seminar.New ser., nos. 3, 6, 10 issued also as Bulletin no. 7 (1919) and [new ser.] nos. 5, 13 (1931, 1936) of the university's Conservation and Survey Division. Another issue of new ser., no. 3 published also as Contributions from the Dept. of Botany, new ser. [3d ser.] no. 28