| ACRS 1991 | ||
| Technical Sessions | Code of sheet | No. of Papers |
| Agriculture & Soil | AGS | 4 |
| Agriculture & Vegetation | AGV | 6 |
| Plenary Session | PLS | 2 |
| Water Resources | WR | 6 |
| Education & Research | EDR | 6 |
| Forestry | FR | 6 |
| Mapping from Space | MSp | 6 |
| Oceanography | OCN | 6 |
| Land Use | LU | |
| Poster Sessions | 5 | |
| Poster Session 1 | PS1 | 13 |
| Poster Session 2 | PS2 | 17 |