Bar graph: Pot Tests on Surface and Subsoils. Lantern Slide. (no date)College of AgricultureAgronom
Crosby Silt Loam 4 Horizons, NPKCa. Lantern Slide. (no date)College of AgricultureAgronom
Comparisons of Methods of Determining available potash in fertilizers, lantern slide. (no date)Coll...
Agriculture Administration building, lantern slide. (no date)College of AgricultureAgronom
Bar graph: Pot tests Genesee Soil and Sub-Soil. Lantern Slide. (no date)College of AgricultureAgrono...
Bar graph: Crosby Silt Loam N-Kca; Clyde Silty Clay Loam N-Kca. Lantern Slide. (no date)College of A...
Bar graph: Crosby Silt Loam NPK; Clyde Silty Clay Loam NPK. Lantern Slide. (no date)College of Agric...
Bar graph: Crosby Silt Loam NPKCa; Clyde Silty Clay Loam NPKCa. Lantern Slide. (no date)College of A...
Bar graph: Crosby Silt Loam PKCa; Clyde Silty Clay Loam PKCa. Lantern Slide. (no date)College of Agr...
Bar graph: Crosby Silt Loam NP-Ca; Clyde Silty Clay Loam NP-Ca. Lantern Slide. (no date)College of A...
Rapid tests, Bedford silt loam, IND., lantern slide. (no date)College of AgricultureAgronom
Semi-quantitative rapid soil tests, lantern slide. (no date)College of AgricultureAgronom
Potash test, muck fertility plots, Wanatah, IN, lantern slide. (no date)College of AgricultureAgrono...
Agricultural Experiment Station [?]. Lantern Slide. (no date)College of AgricultureAgronom
Agricultural Administration building (Agricultural Experiment Station?). Lantern Slide. (no date)Col...
Rapid P and K tests, IND., lantern slide. (no date)College of AgricultureAgronom
Crosby Silt Loam 4 Horizons, NPKCa. Lantern Slide. (no date)College of AgricultureAgronom
Comparisons of Methods of Determining available potash in fertilizers, lantern slide. (no date)Coll...
Agriculture Administration building, lantern slide. (no date)College of AgricultureAgronom
Bar graph: Pot tests Genesee Soil and Sub-Soil. Lantern Slide. (no date)College of AgricultureAgrono...
Bar graph: Crosby Silt Loam N-Kca; Clyde Silty Clay Loam N-Kca. Lantern Slide. (no date)College of A...
Bar graph: Crosby Silt Loam NPK; Clyde Silty Clay Loam NPK. Lantern Slide. (no date)College of Agric...
Bar graph: Crosby Silt Loam NPKCa; Clyde Silty Clay Loam NPKCa. Lantern Slide. (no date)College of A...
Bar graph: Crosby Silt Loam PKCa; Clyde Silty Clay Loam PKCa. Lantern Slide. (no date)College of Agr...
Bar graph: Crosby Silt Loam NP-Ca; Clyde Silty Clay Loam NP-Ca. Lantern Slide. (no date)College of A...
Rapid tests, Bedford silt loam, IND., lantern slide. (no date)College of AgricultureAgronom
Semi-quantitative rapid soil tests, lantern slide. (no date)College of AgricultureAgronom
Potash test, muck fertility plots, Wanatah, IN, lantern slide. (no date)College of AgricultureAgrono...
Agricultural Experiment Station [?]. Lantern Slide. (no date)College of AgricultureAgronom
Agricultural Administration building (Agricultural Experiment Station?). Lantern Slide. (no date)Col...
Rapid P and K tests, IND., lantern slide. (no date)College of AgricultureAgronom
Crosby Silt Loam 4 Horizons, NPKCa. Lantern Slide. (no date)College of AgricultureAgronom
Comparisons of Methods of Determining available potash in fertilizers, lantern slide. (no date)Coll...
Agriculture Administration building, lantern slide. (no date)College of AgricultureAgronom