Title: Fish and river pollution
Subjects: Fishes, Water, Physiology, Pollution, Water Pollution, Effect of water pollution on, Effect of water quality on, Fish culture, Anatomie, Poissons, Morphologie (Animaux), Effets de la pollution de l'eau sur, Effets de la qualité de l'eau sur, Pisciculture, Physiologie, Effets de la pollution de l'eau, Mer