@misc{Schmidt_Georg_Christoph_Beschreibung_1784,
 author={Schmidt, Georg Christoph},
 title={Beschreibung Gemeinnütziger Maschinen},
 address={Jena},
 year={1784},
 language={ger},
 type={starodruk},
 publisher={Johann Rudolph Grofers},
 keywords={Stare druki},
}