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| Agriculture, Fisheries and Aquaculture. (1) |
| Biology, Zoology. (1) |
| Caddo Lake (La. and Tex.) (1) |
| Fishes Mercury content Texas. (1) |
| Largemouth bass Texas. (1) |
| Agriculture, Fisheries and Aquaculture. (1) |
| Biology, Zoology. (1) |
| Caddo Lake (La. and Tex.) (1) |
| Fishes Mercury content Texas. (1) |
| Largemouth bass Texas. (1) |