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APA Citation
Unknown (2008). Joe Celko's thinking in sets : auxiliary, temporal, and virtual tables in SQL. Place of publication not identified : Morgan Kaufmann. http://access.bl.uk/ark:/81055/vdc_100026157010.0x000001
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Unknown (2008). Joe Celko's thinking in sets : auxiliary, temporal, and virtual tables in SQL. Place of publication not identified : Morgan Kaufmann. http://access.bl.uk/ark:/81055/vdc_100026157010.0x000001