Notice of the public hearing shall be given by publication not less than once a week for four successive weeks in a newspaper of general circulation published in the county in which the land lies. The notice shall:
(a) Describe specifically the boundaries of the proposed redevelopment project area; and
(b) State the day, hour and place when and where any and all persons having any objections to the proposed redevelopment plan or who deny the existence of blight in the proposed project area, or the regularity of any of the prior proceedings, may appear before the legislative body and show cause why the proposed plan should not be adopted.