About: http://webisa.webdatacommons.org/226491932

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	???Viruses such as PRRS, swine influenza and porcine respiratory coronavirus combined with enzootic pneumonia and other bacteria to produce constant major problems throughout production systems.??? (25)
http://www.w3.org/ns/prov#wasQuotedFrom	viva.org.uk