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<http://webisa.webdatacommons.org/prov/512709282>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/74220088> .
<http://webisa.webdatacommons.org/74220088>	<http://www.w3.org/ns/prov#value>	"introduction to the subject and may be especially useful for students in a" .
<http://webisa.webdatacommons.org/74220088>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<ualberta.ca> .