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Oral history transcript, Leo Gehrig, interview 1 (I), 2/13/1990, by Michael L. Gillette (Item)
Oral history transcript, Richard M. Scammon, interview 1 (I), 3/3/1969, by Stephen Goodell (Item)
  • on. Then there are some that are done on a 25 per cent sample, and there are some that are done on even smaller samples than that. The desire, of course, is to get meaningful data at the small unit level, even down to the block if necessary, certainly the enumeration