49The reference in subsection (1) of-section 133 of this Act to the acquisition of land under section 68 or 71 of the Act of 1962 shall include a reference to the acquisition of land under section 38 or 40 of the Act of 1947 ; and the reference in that subsection to the appropriation of land for purposes for which land can be or could have been acquired under the provisions there mentioned is a reference to the appropriation of land for those purposes whether before or after the commencement of this Act.