<http://ns.inria.fr/covid19/PMC7409921#title>	<http://purl.org/dc/terms/subject>	"Earth sciences" .
<http://ns.inria.fr/covid19/PMC7409921#title>	<http://purl.org/dc/terms/subject>	"Liquid-solid separation" .
<http://ns.inria.fr/covid19/PMC7409921#title>	<http://purl.org/dc/terms/subject>	"Laboratory techniques" .