<http://webisa.webdatacommons.org/5349110> <http://www.w3.org/ns/prov#wasQuotedFrom> <wordpress.com> . <http://webisa.webdatacommons.org/prov/494151502> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/5349110> . <http://webisa.webdatacommons.org/5349110> <http://www.w3.org/ns/prov#value> "Foundation of economic theory and concept, i.e., demand and supply, price mechanism theory of consumer behavior, Theory of production, costs and types of Markets, national income, international trade, structure of Thai economic system, etc." . <http://webisa.webdatacommons.org/5349110> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> .