Means of transportation to work
Out of Universe (designated as missing): bb. N/A (not a worker--not in the labor force, including persons under 16 years; unemployed; employed, with a job but not at work; Armed Forces, with a job but not at work)
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Taken from: American Community Survey (ACS): Three-Year Public Use Microdata Sample (PUMS), 2005-2007 - California Population.