73A.17  Unpaid revenue bonds — effect.
  It shall be lawful for any municipality to issue revenue bonds, the principal and interest of which are to be paid solely from revenue derived from the operations of the project for which such bonds are issued, notwithstanding that there are other revenue bonds remaining unpaid which have not matured, provided payment of principal and interest of such other revenue bonds is not impaired thereby.
[C62, 66, 71, 73, 75, 77, 79, 81, §23.17]
C93, §73A.17