<s>[INST] When were the changes made to the Bihar Land Reforms (Fixation of Ceiling Area and Acquisition of Surplus Land) Act, 1961 by the Bihar Act XII of 1962? [/INST] The changes were made to the Bihar Land Reforms (Fixation of Ceiling Area and Acquisition of Surplus Land) Act, 1961 by the Bihar Act XII of 1962. </s>