Note 21 — Chapter IV · THE PLANT FORMATION Methods of Investigation and Record
Reading edition
The Development and Structure of Vegetation, 84. 1904.
Thornber, J. J. The Prairiegrass Formation in Region I. Rep. Bot. Surv. Neb., 5:29. 1901.
Reading edition
The Development and Structure of Vegetation, 84. 1904.
Thornber, J. J. The Prairiegrass Formation in Region I. Rep. Bot. Surv. Neb., 5:29. 1901.