| Acronym | Meaning |
 | DSN | Defense Switched Network |
| ARPANET | Advanced Research Projects Agency Network |
| INFOTERRA | International Environmental Research And Referral Service Of UNEP |
| UCAID | University Corporation For Advanced Internet Development |
| TROPEX | Tropical Experiment |
| GRAF | Gridded Representation Of Analyses And Forecasts |
| ECTD | Emission Control Technology Division |
| NSF | National Science Foundation |
| PERFMON | Performance Monitor Utility |
| OWWS | Office Of World Weather Systems |
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