<http://webisa.webdatacommons.org/197185803>	<http://www.w3.org/ns/prov#value>	"Lev Vygotsky is a famous psychologist from former Soviet Union, whose theory made great contribution to defectology." .
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<http://webisa.webdatacommons.org/197185803>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<cscanada.net> .
<http://webisa.webdatacommons.org/prov/321468684>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/197185803> .