Liebig, Justus von, 1803-1873 |
Letters on modern agriculture [Microform] / by baron von Liebig ; edited by John Blyth |
London : Walton and Maberly, 1859. |
Liebig, Justus von, 1803-1873 |
The natural laws of husbandry [Microform] / by Justus von Liebig ; ed. by John Blyth |
New York : D. Appleton and company, 1863. |