http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Guidelines for evaluation of visible emissions
certification, field procedures, legal aspects, and background material
139 unnumbered pages : illustrations, graphs ; 28 cm.
Prepared by Pacific Environmental Services, Inc., Santa Monica, Calif., under contract number 68-02-1390, task order number 2.
Stationary source enforcement series ; EPA-340/1-75-007