| ipaa.org | Independent Petroleum Association of America |
| aiche.org | American Institute of Chemical Engineers |
| pmaa.org | Petroleum Marketers Association of America |
| offshore-technology.com | Offshore Technology Industry Organisations |
| gasandoil.com | Oilpatch Directory Europe |
| southjerseyoilheat.com | South Jersey Oil Heat Association |
| smartbrief.com | SmartBrief - B2B Newsletters for Trade Associations |
| ihserc.com | Ihs Standards, Regulations, Information Solutions - Global Engineering Document |
| spe.org | Society of Petroleum Engineers |
| astm.org | ASTM International |
| api.com | www.api.com/ |
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