About: http://webisa.webdatacommons.org/249056863

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	To the silver halide emulsion may be added various other additives for photography, for example, a hardening agent, a surface active agent, an antifoggant and other additives such as an UV absorber and a fluorescent whitening agent.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca