Free films on air pollution: on loan for group showing
14 professionally-produced films that illustrate the serious problem of air pollution, and what to do about it!
Public Health Service publication
National Center for Air Pollution Control (U.S.), compiler.
[Washington, D.C.] : For sale by the Superintendent of Documents, U. S. Goverment Printing Office, 
The National Library of Medicine believes this item to be in the public domain.
16 unnumbered pages
NLM Unique ID:
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Metadata (Dublin Core)