| Acronym | Meaning |
 | WWW | World Weather Watch |
| LGSOWG | Landsat Ground Station Operators Working Group |
| CDC | Control Data Corporation |
| AC | Advisory Circular/committee |
| ATSDR | Agency For Toxic Substances And Disease Registry |
| EOC | Earth Observation Center |
| OMO | Office Of Meteorological Observations |
| APEX | Advance Purchase Excursion |
| PPB | Parts Per Billion |
| ATSR | Argonne Thermal Source Reactor |
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