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MLA Citation
Unknown. Joe Celko's Trees and hierarchies in SQL for smarties. Amsterdam Boston : Morgan Kaufmann, 2004. http://access.bl.uk/ark:/81055/vdc_100026150691.0x000001
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Unknown. Joe Celko's Trees and hierarchies in SQL for smarties. Amsterdam Boston : Morgan Kaufmann, 2004. http://access.bl.uk/ark:/81055/vdc_100026150691.0x000001