 |
| |||
| E flute (type of corrugation with appr. 96 flutes per foot; 0, 045 in. high - see corrugated board -, tipo di ondulazione con circa 96 onde per 30,48 cm; altezza circa 1,19 mm - cartone ondulato) | |||
| onda E: 10 phrases in 6 subjects |
| Communications | 4 |
| Earth sciences | 2 |
| Environment | 1 |
| Life sciences | 1 |
| Mineral products | 1 |
| Technology | 1 |