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Canals and inland waterways | Description, History, Types, Features, Importance, & Examples | Britannica
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Canal d'irrigation avec l'eau qui coule à travers l'eau pour les champs agricoles. L'Est de l'Oregon Photo Stock - Alamy
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B.Sc. Zoology Part I CANAL SYSTEM IN PHYLUM PORIFERA (SPONGES) 1. Asconoid Type:- Water from exterior incurrent pores spongocoel
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