. "The changing fertility of New England soils"@en . "The changing fertility of New England soils" . . . . . . . . . . . . . . . "The purpose of this bulletin is to bring together the lines of evidence that indicate fertility trends in New England soils. These trends include data relating both to forested and cultivated soils, although the information is more complete for cultivated soils. Such a broad regional study is made possible by the collaboration of both State and federal agricultural research agencies."@en . . . . . . "Soils New England." . .