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beg pardon if this has come over twice; been changing my e-mail address w/
concommitant loss of some mail last week.
Does anyone out there have a zip(5 digit) code centroid file available?  We
have health survey data w/ respondents geocoded by zip code & surrogate
exposure data on hazardous releases & toxics geocoded by lat/long of
the monitoring stations.  Need to match the 2 sets up in a not too
implausible fashion.
yours appreciatively,
bob mcconnaughey
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