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<http://webisa.webdatacommons.org/prov/61862878>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/326492012> .
<http://webisa.webdatacommons.org/326492012>	<http://www.w3.org/ns/prov#value>	"This method of striking became an important union tactic in the coal, railroad, and other industries during the postwar period." .
<http://webisa.webdatacommons.org/326492012>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tanagraltd.com> .