What was the impact of the Constitution (Seventh Amendment) Act, 1956 on entry 52?
The Constitution (Seventh Amendment) Act, 1956, substituted entry 52 with the words "industries subject to the provisions of entries 7 and 52 of List I" in the context provided. This amendment altered the original entry which was related to industries in general and made it specific to industries that are subject to the provisions of other entries in the same list, potentially restricting or modifying its scope.