About: http://webisa.webdatacommons.org/309868545

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Chartier will focus specifically on the many sirens, waveforms, and other inventions of the German physicist Rudolf Koenig including the Tonometer (c. 1870-1875), the only instrument of its kind in existence.
http://www.w3.org/ns/prov#wasQuotedFrom	iglou.com