About: http://webisa.webdatacommons.org/61635156

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 version has not only Acrobat PDF facsimiles of the text but enables searching on structures and parameters such as the CAS Registry number, molecular weight, substance name, and formula.
http://www.w3.org/ns/prov#wasQuotedFrom	tufts.edu