About: http://webisa.webdatacommons.org/233446824

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	This lens is a standard ???4 microscope objective with numerical aperture of 0.10 (Supplied by G. J. Carl Hansens Eftf., Denmark).
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr