Description
Published:Dec. 1988-
Item Description:Some v. distributed to depository libraries in microfiche, as Supt. Of Docs. class no.: HE 20.8202:EP 4/3/
Physical Description:v. : ill. ; 28 cm.
Some issues also available via Internet from the CEWG web site. Address available as of 4/12/99: http://www.cdmgroup.com/cewg/pubs.htm; current access available via PURL.
Publication Frequency:Semiannual