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henry f holtz
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Effect of calcium and phosphorus content of various soil series in western Washington upon the calcium and phosphorus composition of oats, red clover and white clover
Henry F. Holtz · State College of Washington, Agricultural Experiment Station
45 sayfa · 1930
Plants / Soils / Effect of phosphorus on / Calcium content / Effect of calcium on
A soil survey of the proposed Palouse Irrigation Project
Henry F. Holtz · State College of Washington, Agricultural Experiment Station
14 sayfa · 1916
Soil surveys