About: http://webisa.webdatacommons.org/431683876

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 collect the material he corresponded with colleagues all over the world, and the result is a classic.
http://www.w3.org/ns/prov#wasQuotedFrom	leidenuniv.nl