http://www.vocabularyserver.com/gemet/en/http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940supply and demand http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 economy BT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 import NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 export NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 demand NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 yield (economy) NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 surplus NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=10940 supply (trade) NT