| http://www.w3.org/ns/prov#value | - The conventional handy type bar code reader, especially, the bar code reader of such a type as to manipulate a laser beam, is not designed in consideration of reading the bar code printed on the above bar code list BL. Accordingly, in the case of reading the bar code printed on the bar code list BL by using the conventional handy type bar code reader, it is impossible to obviate a problem of doubl
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