| Acronym | Meaning |
 | IGY | International Geophysical Year |
| MWO | Mt. Washington Observatory |
| EGP | Exterior Gateway Protocol |
| IDNDR | International Decade For Natural Disaster Reduction |
| CCR/IDA | Center For Communications Research/Institute For Defense Analyses |
| CAC | Climate Analysis Center |
| GBDS | GARP Basic Data Set |
| AOC | Area Of Contamination |
| MTA | Message Transfer Agent |
| PSN | Piano Spaziale Nazionale |
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