Note 28 — Chapter IV · THE PLANT FORMATION Methods of Investigation and Record (continued 2)
Reading edition
Thornber, J. J. The Prairiegrass Formation in Region I. Rep. Bot. Surv. Nebr., 5:36, 46. 1901.
Reading edition
Thornber, J. J. The Prairiegrass Formation in Region I. Rep. Bot. Surv. Nebr., 5:36, 46. 1901.