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Ichthyological field studies

Ichthyological field studies. Fish and device in old table. Weighing, measuring, scaling, taking tissue samples from river fish, study populations and pollution. Grayling (Th. thymallus). Scandinavia

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Size Width Height Mp
s 500 px 333 px 0.5
m 1000 px 667 px 2
l 2000 px 1333 px 8
xl 2829 px 1886 px 15

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