The Planning Board shall hold a public hearing, duly advertised as required by MGL c. 40A, § 5, on any proposed amendment referred to it by the Board of Selectmen within 65 days of such referral. Notices of such hearing shall be mailed to all property owners according to the latest tax record, included within or abutting land subject to amendment, abutting communities, and the Regional Planning Agency. General notice will serve where the proposed amendment is of universal or wide application in the Town.