l_blue_book_heading: 100, 385, 300
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 100 | 385 POST-CERTIFICATION AND UNIT CLARIFICATION ISSUES 385 | 300 INVESTIGATION AND CERTIFICATION OF REPRESENTATIVE 300 | GENERALLY |
| bb_heading | bb_chapter | bb_division | description |
|---|---|---|---|
| 100 | 385 POST-CERTIFICATION AND UNIT CLARIFICATION ISSUES 385 | 300 INVESTIGATION AND CERTIFICATION OF REPRESENTATIVE 300 | GENERALLY |