Each issue of bonds or other obligations issued under subsection (a) of section 1574a of this title shall have a parity lien with every other issue of bonds or other obligations issued for payment of principal and interest out of revenues received under section 7652(b)(3) of title 26, except that issues guaranteed under section 1574b of this title shall have priority, according to the date of issue, over issues not so guaranteed and the revenues received under section 7652(b)(3) of title 26 shall be pledged for the payment of such bonds or other obligations.