l_blue_book_heading: 125, 480, 400
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 125 | 480 POSTAL SERVICE UNITS 480 | 400 BARGAINING UNITS 400 | POSTAL REORGANIZATION ACT OF 1970 |
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 125 | 480 POSTAL SERVICE UNITS 480 | 400 BARGAINING UNITS 400 | POSTAL REORGANIZATION ACT OF 1970 |