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1. Agronomic work on the Big Spring, Tex., Field Station--1915-1929

Author:: Keating, F. E. (Fred Earl), 1892 , USDA
Subject:: climatic factors , field experimentation , crop rotation , tillage , small grains , grain crops , Cropping systems -- Texas. , Tillage -- Texas. , Field experiments -- Texas.
Physical description:: 32 p.
Collection:: Organic Roots Collection
Series:: Circular
Part Of:: Circular