National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Title/Authors	Accession Number	Publication Year	Page Count	Download
User's Guide for Executing OZIPM-4 (Ozone Isopleth Plotting with Optional Mechanisms, Version 4) with CBM-IV (Carbon-Bond Mechanisms-IV) or Optional Mechanisms. Volume 1. Description of the Ozone Isopleth Plotting Package. Version 4. Hogo, H; Gery, M. W.	PB88221957	1988	250 pages
User's Guide for Executing OZIPM-4 (Ozone Isopleth Plotting with Optional Mechanisms, Version 4) with CBM-IV (Carbon-Bond Mechanism-IV) or Optional Mechanisms. Volume 2. Computer Code. Hogo, H; Gery, M. W.	PB88221965	1988	175 pages