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LEGO Technic App-Controlled Cat D11 Bulldozer 42131; A True-to-Life Replica of an Iconic Construction Machine (3,854 Pieces), Building Sets - Amazon Canada
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42131 Cat D11 Mods and improvements - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
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REVIEW] 42131 - CAT D11T Bulldozer - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
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