. . "MacDonald v Vapor Canada Ltd, [1977] 2 S.C.R. 134 is a leading constitutional decision of the Supreme Court of Canada on the Trade and Commerce power under section 91(2) of the Constitution Act, 1867."@en . . . "1116562635"^^ . . . . . . . . . . . . "MacDonald v Vapor Canada Ltd"@en . . . . . . "2213"^^ . . . . . . "MacDonald v Vapor Canada Ltd, [1977] 2 S.C.R. 134 is a leading constitutional decision of the Supreme Court of Canada on the Trade and Commerce power under section 91(2) of the Constitution Act, 1867."@en . . . . . . "4656922"^^ .