About: http://webisa.webdatacommons.org/374019520

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	Paper is an organic material and readily absorbs moisture and oil, and neither substance is desirable to preserve stamps you want to keep looking nice in your collection.
http://www.w3.org/ns/prov#wasQuotedFrom	linns.com