About: http://webisa.webdatacommons.org/94277543

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The examiner???s eyes should be as close as possible to the eyepieces, with the free hand adjusting the focusing ring until a clearly focused image is obtained (in most cases it is only necessary to set up the focus once).
http://www.w3.org/ns/prov#wasQuotedFrom	hindawi.com