Primary Information Source(s):

PUMS Files: Census of Population of Housing, 1990: Public Use
	    Microdata Sample [machine-readable data
	    files]/prepared by the Bureau of the Census -
	    Washington:  The Bureau [producer and distributor],
	    1992.

Codebooks:  U.S. Dept. of Commerce, Bureau of  the  Census.
	    CENSUS  OF POPULATION AND HOUSING, 1990 [UNITED
	    STATES]:  PUBLIC USE MICRODATA SAMPLE:  1-PERCENT
	    SAMPLE [Computer    file].  2nd release.
	    Washington, DC:  U.S. Dept. of Commerce, Bureau of
	    the Census [producer], 1993. Ann Arbor, MI:
	    Inter-university Consortium for Political and
	    Social Research [distributor], 1993.