Description
Item Description:"Developed as part of a joint effort between the U.S. Environmental Protection Agency and state and local air pollution control agencies"--Cover.
Shipping list number: 98-0973-M.
"April 1998"--Prelim. p.
"May 1998"--Cover.
Microform.
Physical Description:1 volume (various pagings) ; 28 cm.
Also available via Internet from the EPA web site (PDF file only).