Barrell, E. (2006). Inland waterways manual: The complete guide to boating on rivers, lakes and canals (3rd.ed.). Adlard Coles nautical.
Dyfyniad Arddull ChicagoBarrell, Emrhys. Inland Waterways Manual: The Complete Guide to Boating on Rivers, Lakes and Canals. 3rd.ed. London: Adlard Coles nautical, 2006.
Dyfyniad MLABarrell, Emrhys. Inland Waterways Manual: The Complete Guide to Boating on Rivers, Lakes and Canals. 3rd.ed. Adlard Coles nautical, 2006.
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