the zoning ordinance pursuant to the recommendations of the Zoning Administrator and directed that the public meeting on the amendments would take place on September 14, 1988, at the time of the regularly scheduled Board meeting. The minutes from *348 September 14, 1988 show that a public hearing was held, and following comment by citizens, the County attorney informed the Board that if any changes to the amendments were made, another public hearing would have to be held. The Board then adopted the amendments without change. The certified copy of the zoning ordinance introduced into the record recites that it was adopted as amended on September 14, 1988, following a properly noticed public hearing. This evidence is sufficient, as the trial court found, to establish that the County'senactment of its zoning ordinance complied with the Zoning Procedures Law.
4. Nevertheless, Mid-Georgia contends that the ordinance is invalid because the County does not keep a copy of superseded portions of the zoning ordinance. The current Clerk of the Board, who was also the clerk in 1988, testified at the evidentiary hearing. She authenticated the certified copy of the zoning ordinance and testified that it was a true and correct copy of the County's current zoning ordinance. She further testified that as the zoning ordinance was amended, pages reflecting the new amendments were inserted into the zoning ordinance and pages reflecting the former law were discarded. She maintains a similar practice with a published loose-leaf book of County ordinanceswhen an ordinance is amended, the book publisher provides a