<http://webisa.webdatacommons.org/241219282>	<http://www.w3.org/ns/prov#value>	" Spherical aberration is an error of spherical refractive and re???ective surfaces" .
<http://webisa.webdatacommons.org/prov/473812344>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/241219282> .
<http://webisa.webdatacommons.org/241219282>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/241219282>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .