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<http://webisa.webdatacommons.org/39670865>	<http://www.w3.org/ns/prov#value>	"Henry F. Walling and the Elevation of American Mapmaking will use maps, atlases and other material to document the" .
<http://webisa.webdatacommons.org/prov/458376536>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/39670865> .