The said property may be disposed of by one of the following four methods:  (1) revocation of the dedication of the property if it consists of a street, road or alley dedicated to public use; (2) sale of any type of property at public auction; (3) sale of any type of property at private sale; or (4) exchange of any type of property for other property of approximately equal value.  

Acts 1968, No. 432, §3.  Amended by Acts 1970, No. 648, §1; Acts 1972, No. 417, §1.