| L | B | Fishing and Trapping Industries |
| L | 03 | Fishing and Trapping Industries |
| L | 031 | Fishing Industries |
| L | 0311 | Salt Water Fishing Industry |
| L | 0312 | Inland Fishing Industry |
| L | 032 | Services Incidental to Fishing |
| L | 0321 | Services Incidental to Fishing |
| L | 033 | Trapping |
| L | 0331 | Furs and Skins, Wild |
| L | 0339 | Other Trapping |