Bonds in the total amount of seventy-five million dollars ($75,000,000), exclusive of refunding bonds issued pursuant to Section 14039, or so much thereof as is necessary, may be issued and sold to provide a fund to be used for carrying out the purposes expressed in this chapter and to be used to reimburse the General Obligation Bond Expense Revolving Fund pursuant to Section 16724.5 of the Government Code. All bonds herein authorized, which shall have been duly sold and delivered as herein provided, shall constitute valid and legally binding general obligations of the State of California, and the full faith and credit of the State of California are hereby pledged for the punctual payment of both principal and interest thereof.