Table 1. Awareness of zebra mussels of boaters from Lake Mead National Recreation Area, Nevada, USA.
| Boater activity type | |||||
|---|---|---|---|---|---|
| Awareness | Pleasure | Angler | Jet Ski | Other | Total |
| Yes | 139 | 15 | 5 | 4 | 163 |
| No | 68 | 15 | 17 | 11 | 111 |
| Total | 207 | 30 | 22 | 15 | 274 |
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