id	keyword
csp-770	waste
csp-770	environmental
csp-770	management
csp-770	waste management
csp-770	collection
csp-770	public
csp-770	urban
csp-770	china
csp-770	msw
csp-770	russian
csp-770	sorting
csp-770	awareness
csp-770	waste collection
csp-770	respondents
csp-770	challenges
csp-770	study
csp-770	policy
csp-770	support
csp-770	participation
csp-770	youth