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The nitrogen of processed fertilizers
The action of manganese in soils
Citrus-fruit improvement : a study of bud variation in the marsh grapefruit
Acidity as a factor in determining the degree of soundness of corn
Production of henequen fiber in Yucatan and Campeche
The gipsy moth on cranberry bogs
Growing plants without soil for experimental use
The Results of physical tests of road-building rock from 1916 to 1921, inclusive
Bacterial wilt of cucurbits
The inorganic composition of some important American soils