An explanation of the 1968 amendments to the Air pollution control ordinance, with schedule of effective dates.

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Bibliographic Details
Corporate author / creator:Chicago. Department of Air Pollution.
Imprint:Chicago, [1968]
Description:5 p. chart.
Language:English
Subject:
Format: Print Book
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/3696747