About: http://webisa.webdatacommons.org/15446536

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 research was an extension of the work of his two German masters, Knapp in ``theoretical demography and Lexis in matters concerning the study of mortality and births.
http://www.w3.org/ns/prov#wasQuotedFrom	statprob.com