<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"Marketing" .
<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"Business terms" .
<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"E-commerce" .
<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"Systems engineering" .
<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"Logistics" .
<http://ns.inria.fr/covid19/PMC7279428#title>	<http://purl.org/dc/terms/subject>	"Human activities with impact on the environment" .