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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	In cases where small amounts of catalysts do not later cause problems, compounds of tin, antimony, titanium, lead and other metals, have proved especially effective.
http://www.w3.org/ns/prov#wasQuotedFrom	poliuretanos.com.br