Table IRD 8. New housing unit permits issued in 1975 (U.S. Department of 

 Commerce 1976b). 



All land areas of these counties covered by permit-issuing systems. 



Table IRD 9. New housing unit permits issued in 1979 (U.S. Department of 

 Commerce 1980c). 



All land areas of these counties covered by permit-issuing systems. 



274 



