Application of this Part.137. (1) This Part shall apply in the first instance to the whole of the States of Andhra Pradesh, Chhattisgarh, Haryana, Nagaland, Punjab, Uttarakhand, Uttar Pradesh and West Bengal and the Union territories; and it shall also apply to such other State which adopts this Part by resolution passed in that behalf under clause (1) of article 252 of the Constitution.(2) It shall come into force at once in the States of Andhra Pradesh, Chhattisgarh, Haryana, Nagaland, Punjab, Uttarakhand, Uttar Pradesh and West Bengal and in the Union territories and in any other State which adopts this Act under clause (1) of article 252 of the Constitution, on the date of such adoption; and, save as otherwise provided in this Part, any reference in this Part to the commencement of this Part shall, in relation to any State, mean the date on which this Part comes into force in such State.