Crop yields from Illinois experiment fields in 1929 together with a general summary for the rotation periods ending in 1929Frederick Charles Bauer · First published 1930Open the Tome
Crop yields from Illinois soil experiment fields in 1925Frederick Charles Bauer · First published 1926Open the Tome
Crop yields from Illinois soil experiment fields in 1926Frederick Charles Bauer · First published 1927Open the Tome
Crop yields from Illinois soil experiment fields in 1932 together with a general summary for the rotation periods ending in 1932Frederick Charles Bauer · First published 1934Open the Tome
Crop yields from Illinois soil experiment fields including the crop season 1935Frederick Charles Bauer · First published 1936Open the Tome
Effects of soil treatment on soil productivityFrederick Charles Bauer · First published 1945Open the Tome
Crop yields from Illinois soil experiment fields in 1933 together with a general summary for the four-year period ending in 1933Frederick Charles Bauer · First published 1934Open the Tome
Crop yields from Illinois soil experiment fields in 1931 together with a general summary for the rotation periods ending in 1931Frederick Charles Bauer · First published 1932Open the Tome
Crop yields from Illinois soil experiment fields in 1930 together with a general summary for the rotation periods ending in 1930Frederick Charles Bauer · First published 1931Open the Tome
Response of Illinois soils to systems of soil treatmentFrederick Charles Bauer · First published 1930Open the Tome
Crop yields from Illinois soil experiment fields in 1928Frederick Charles Bauer · First published 1929Open the Tome
Crop yields from Illinois soil experiment fields in 1927Frederick Charles Bauer · First published 1928Open the Tome