"Manures." . . . . "Fertilizers." . . "Agricultural chemistry." . . . . . "Familiar digest of the recent discoveries of Liebeg, Davy and other celebrated writers on vegetable chemistry" . "Familiar digest of the recent discoveries of Liebeg, Davy and other celebrated writers on vegetable chemistry"@en . "Productive farming, or, A familiar digest of the recent discoveries of Liebeg, Davy, and other celebrated writers on vegetable chemistry : showing how the results of English tillage might be greatly augmented"@en . "Productive farming"@en . "Productive farming" . . . . . . . . . "Productive farming : or a familiar digest of the recent discoveries of Liebeg, Davy, and other celebrated writers on vegetable chemistry showing how the results of english tillage might be greatly augmented" . "Electronic books"@en . "Productive farming ; or, a familiar digest of the recent discoveries of Liebeg, Davy, and other celebrated writers on vegetable chemistry, showing how the results of English tillage might be greatly augmented"@en . . . . . "Productive farming, or, A familiar digest of the recent discoveries of Liebeg, Davy and other celebrated writers"@en . . "Productive farming : or, A familiar digest of the recent discoveries of Liebeg, Davy and other celebrated writers on vegetable chemistry : showing how the results of English tillage might be greatly augmented"@en . "Productive farming, or, A familiar digest of the recent discoveries of Liebeg [sic], Davy and other celebrated writers on vegetable chemistry showing how the results of English tillage might be greatly augmented"@en . "Productive farming, or, A familiar digest of the recent discoveries of Liebeg [sic], Davy and other celebrated writers on vegetable chemistry showing how the results of English tillage might be greatly augmented" . . . . . . "Productive Farming; Or A Familiar Digest Of The Recent Discoveries Of Liebeg [!], Davy, And Other Celebrated Writers On Vegetable Chemistry : Showing How The Results Of English Tillage Might Be Greatly Augmented" . . . "Productive farming : or, A familiar digest of the recent discoveries of Liebeg [sic], Davy and other celebrated writers on vegetable chemistry : showing how the results of English tillage might be greatly augmented"@en . . "Productive farming, or, A familiar digest of the recent discoveries of Liebeg [sic], Davy and other celebrated writers on vegetable chemistry : showing how the results of English tillage might be greatly augmented"@en . "Productive farming, or, A familiar digest of the recent discoveries of Liebig, Davy and other celebrated writers"@en . . .