INITIATIVE AND REFERENDUM ‑- LEGISLATURE ‑- ALTERNATIVE MEASURE 43-B ‑- (1973) ‑- SHORELINE MANAGEMENT ACT OF 1971 In order to amend the provisions of Alternative Measure 43-B, the "Shoreline Management Act of 1971," during the current (1973) legislative session, it will be necessary that any such amendment have the approval of a two-thirds majority of the members of each house of the legislature, unless the amendments are contained in a referendum bill.