1980 census of population and housing.

"PHC80-R5."

1980 census of population and housing.

"PHC80-E1."

1980 census of population and housing.

"PHC80-R2B."

1980 census of population and housing.

"PHC80-E4."

1980 census of population and housing.

"PHC80-R-2D."

1980 census of population and housing.

"PHC80-R-2E."

1990 census of population and housing.

"Issued August 1993."

1990 census of population and housing.

"Issued November 1993."

1990 census of population and housing.

"Issued September 1993."

1980 census of population and housing.

"PHC80-4-13."

1980 census of population and housing.

"PHC80-4-20."

1980 census of population and housing.

"PHC80-4-26."

1980 census of population and housing.

"PHC80-4-28."

1980 census of population and housing.

"PHC80-4-32."

1980 census of population and housing.

"PHC80-4-34."