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| rat kangaroos (Potoroinae) | |||
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| heteromyids (Heteromyidae); kangaroo mice (Heteromyidae); pocket mice (Heteromyidae); kangaroo rats and allies (Heteromyidae); kangaroo rats (Dipodomys) | |||
| rats-kangourous: 49 phrases in 6 subjects |
| Environment | 3 |
| Life sciences | 3 |
| Mammals | 32 |
| Natural resourses and wildlife conservation | 2 |
| Natural sciences | 2 |
| Zoology | 7 |