| FWPCA | Federal Water Pollution Control Administration |
|---|---|
| HAP | Handicapped Aid Program; Hazardous Air Pollutants [List]; hazardous air pollution; health alliance p... |
| NAPCA | National Air Pollution Control Administration |
| AAP | air at atmospheric pressure; American Academy of Pediatrics; American Academy of Pedodontics; Americ... |
| API | alkaline protease inhibitor; Analytical Profile Index; arterial pressure index; atmospheric pressure... |