About: http://webisa.webdatacommons.org/263790228

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	As director of the Center for the History of Physics of the American Institute of Physics since 1974, he has written a number of books, including two for children.
http://www.w3.org/ns/prov#wasQuotedFrom	economicprincipals.com