About: http://webisa.webdatacommons.org/361651598

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	The book is a collection of essays he wrote in the 1950s, 1960s, and 1970s, some of which he revised in the late 1980s before the book was published in 1990.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com