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<br />Santa Ana Public Library <br />Technical Processing Services <br /> <br />k. Extent of item (300 field, subfield a) must match. <br /> <br />For atlases, the number of pages may vary by 20 and still be considered a <br />match if all the other applicable elements identified in this item #2 match. <br /> <br />The form of the physical item must match, e.g., maps must match maps, <br />globes must match globes, etc. <br /> <br />The number of physical items must match. <br /> <br />1 map = map <br />map = col. map on sheet <br />map = map 50 x 75 cm. <br /> <br />Any OCLC record that lacks a physical description area will be considered <br />a match if all the other applicable elements identified in this item #2 match. <br />OCLC will edit the 300 field to match the map. <br /> <br />I. Scale (507 field, subfield a OR 255 field, subfield a) must match <br />approximately if present on both the map and the record. <br /> <br />If the scale on either the map or the record is indicated as approximate <br />("ca."), they are expected to be reasonably close for matching. <br /> <br />3. Selection of matching records for non.serial titles <br /> <br />When more than one matching record is found upon World Cat, OCLC will select <br />one record according to the following priority, as determined by reviewing the <br />040 field: <br /> <br />a. LC-MARC record or PCC BIBCO full level record. <br /> <br />An LC-MARC record shall be considered to be any record that has <br />Encoding level blank, 1, or 8, and "DLC" in the 040 field, subfield c. <br /> <br />b. Member-input record, based on LC copy. <br /> <br />When there is more than one matching member-input record, based on <br />LC copy, select one based on accuracy and completeness. <br /> <br />c. Member-input record, not based on LC copy. <br /> <br />When there is more than one matching member-input record, not based <br />on LC copy, select one based on accuracy and completeness. <br /> <br />13 <br />