l_blue_book_heading: 100, 480, 400
This data as json
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 100 | 480 POSTAL SERVICE UNITS 480 | 400 BARGAINING UNITS 400 | GENERALLY |
This data as json
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 100 | 480 POSTAL SERVICE UNITS 480 | 400 BARGAINING UNITS 400 | GENERALLY |