| balanced incomplete block design abbr. | |
| stat. | diseño por bloques incompletos balanceados; diseño por bloques incompletos equilibrados |
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resolvable : 11 phrases in 6 subjects |
| Communications | 3 |
| Earth sciences | 1 |
| Mathematics | 2 |
| Meteorology | 3 |
| Natural sciences | 1 |
| Statistics | 1 |