10-507. Tax levy; limit.
The county board of any county issuing bonds under the provisions of sections 10-501 to 10-509 shall levy a tax annually for the payment of the interest on said bonds as it becomes due; Provided, an additional amount shall be levied and collected sufficient to pay the principal of such bonds at maturity; and provided, not more than twenty percent of the principal of said bonds shall be levied and collected in any one year.
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