<http://schema.org/url>
<http://www.agweb.com/article/vista_approved_for_use_in_pregnant_cows_and_nursing_calves__NAA_News_Release/>
<http://www.agweb.com/farmjournal/article/vista_approved_for_use_in_pregnant_cows_and_nursing_calves__naa_news_release/>