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2. Attorney General's Chambers. 2011. “Environmental Protection and Management Act (Chapter 94A).” Accessed December 7, 2011. http://statutes.agc.gov.sg/aol/search/summary/results.w3p;query=CapAct%3A%2294a%22%20Type%3Auact,areved
3. Learning to see work flow: an application of lean concepts to precast concrete fabrication
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5. An exploration of the synergies between Six Sigma, total quality management, lean construction and sustainable construction