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TDHCTime Domain Harmonic Coding
TDHCToronto District Health Council (Canada)
TDHCToronto District Heating Corporation (est. 1982; Ontario, Canada)
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References in periodicals archive ?
'TDHC has its origins in one of the few really successful Business Expansion Scheme companies.
In the last two years TDHC, which employs 200 staff, has been highly acquisitive and has bought businesses in the genetic testing, laboratory software and clinical trial services areas.