1. Justus von Liebig: Labor- und Arbeitsstätte Publication: [Giessen? : Bank für Gemeinwirtschaft, 19--] Subject(s): Chemistry -- historyAgriculture -- historyNutritional Physiological PhenomenaPaintingsGermanyLiebig, Justus, Freiherr von, 1803-1873.
2. Agricultural machinery and implements Author(s): Grinnell, Jas. S., author Publication: Boston : Wright and Potter Printing Co., state printers, 1883 Subject(s): Agriculture -- instrumentationAgriculture -- history