| nibs.org | National Institute Of Building Sciences |
| construction-institute.org | Construction Industry Institute |
| nawic.org | National Association of Women in Construction |
| coaa.org | Coaa - Construction Owners Association Of America, Inc. |
| aspenational.com | American Society of Professional Estimators |
| pmi.org | Project Management Institute |
| nspe.org | National Society of Professional Engineers |
| dbia.org | Design-build Institute Of America, Dbia |
| csinet.org | The Construction Specifications Institute |
| crsi.org | Concrete Reinforcing Steel Institute - CRSI |
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