{"id":"001517916","type":"book","title":"Herons Belopoiika (Scrift vom Geschützbau) ; Philons Belopoiika (Mechanik Buch IV und V)","publisher":"Zentralantiquariat der DDR","publisher-place":"Leipzig","author":[{"family":"Heron (Alexandrinus)"}],"issued":{"raw":"1970"}}