Downstream: a natural history of the river/
Aerial view of a retreating mountain glacier. Water flow over a stone in a mountain stream. Typical midge larva. Stonefly Nymph. Larva of a net-winged midge. The origin of springs and wells. Ground water seepage in and out of a stream. Scud or sideswimmer. Water mite. A typical copepod. Rotifer. Aer...
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| Formato: | Libro |
| Lenguaje: | English |
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