(1) ContFibution shall become payable iinde~ this Act Wheq — T.K. Act IIIJ

6. (1) ContFibution shall become payable iinde~ this Act Wheq if dd hf2[id bhtion () py ,on a written notice of demand therefor 2[issued by the hid bihdhd y authorized ofim] being servedl on the 1andhoIdm : Wheq tion on payable. provided that no such notice shall be ss !ved until the f ' fhdf lif h' p expiry of two years' after the date of completion of the' a[execution of the notified work] : Ppovided fur the^ that whore, $efore f thlPdf d] di( the cornonce-' Ppovided fur the that whore, $efore the cornonce ment of the lPdf Nadu] Idgation. (Levy of Betterment ibi) AA19631 ] g(y Contribution) Ameudrnent Act, 19631, two years or more

Section 6