<http://webisa.webdatacommons.org/382492489>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<warc.com> .
<http://webisa.webdatacommons.org/prov/329715467>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/382492489> .
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<http://webisa.webdatacommons.org/382492489>	<http://www.w3.org/ns/prov#value>	"A number of issues in mobile survey design are discussed, and solutions offered including tips for cutting down on survey length and decreasing sampling requirement." .