Search for: [Subject and Keywords = Insects \- entomology] OR [Subject and Keywords = Insects \- Butterflies \- methods of acquisition and preparation] OR [Subject and Keywords = Owady \- entomologia] OR [Subject and Keywords = Owady \- Motyle \- metody pozyskiwania i preparowania] OR [Title = Ueber Fang, Zucht, Präpariren und Aufbewahrung von Kleinschmetterlingen] OR [Creator = Hering, Eduard \(1842–1911\)]