Bonds issued under this article shall not be deemed to constitute a debt of the State of Georgia or a pledge of the credit of the state. Such bonds shall be payable solely from the fund provided for in this article. The issuance of such bonds shall not directly, indirectly, or contingently obligate the state to levy or to pledge any form of taxation whatsoever therefor or to make any appropriation for their payment. All such bonds shall contain recitals on their face covering substantially this Code section.