<https://iede.news/nl_be/europese-unie/polen-bouwt-met-eu-subsidie-bio-gasinstallaties-op-20-boerderijen/#article>
<http://schema.org/copyrightYear>
"2020"
<https://iede.news/nl_be/europese-unie/polen-bouwt-met-eu-subsidie-bio-gasinstallaties-op-20-boerderijen/>