_:ne2ac51fe1d614204a8792b1fa307360cxb1
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.naranjamania.com/blog/la-importancia-de-la-materia-organica-en-el-suelo?___store=es&___from_store=es>