| Acronym | Meaning |
 | GGEM | Gravity Gradiometer Explore Mission |
| ACSYS | Arctic Climate System Study |
| ERTS | Earth Resources Technology Satellite |
| FIFE II | First ISLSCP Field Experiment II |
| EH | Oxidation Potential |
| F | Forad |
| DDC | Defense Documentation Center |
| LOTREX | Working LORAN |
| AST | Algorithm Support Team |
| EBB | Equivalent Blockbody |
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