a) The Ga County DOT maps have MANY cemeteries noted on the individual DOT county maps, many times these are named and are named using the family surname. These maps do NOT have the cemeteries that's located within the larger cities limits.
b) Check with the largest library in the specific county or the counties geanological or historical society to see if a cemetery survey book has been produced for sale or how to locate one to review.
c) Check with the Georgia Archives to see if they have a cemetery survey book on the county you suspect, they have MANY, sometimes folks have NOT done a complete survey BUT there are surveys of a few.
d) WARNING > Listings found on the internet MANY times are NOT a complete listing and MANY times such a list DOESN'T state this fact, you may look at a listing assuming that whats listed is ALL buried in that cemetery when it is NOT.
e) Find if you can the OLDEST funeral home in the area, many times these are a big help.