. . "Unknown"@en . "Aveling & Porter no. 6021 is an Steam tractor that was built in 1906 by Aveling & Porter in Kent."@en . "Aveling & Porter"@en . "?"@en . . "-"@en . . "Rickmandsworth Water Board"@en . . . . "one"@en . "6021"^^ . . "R. Swain"@en . "Aveling & Porter no. 6021"@en . . "At Southport"@en . "Aveling & Porter no. 6021 is an Steam tractor that was built in 1906 by Aveling & Porter in Kent."@en . . . ""@en . "1906"^^ . "Cab front"@en . "5"^^ .