Description
Published:1981-
Item Description:Title from cover.
Not distributed to depository libraries, 2001-
Purchase from: New Orders, Supt. of Docs., P.O. Box 371954, Pittsburgh, PA 15250-7954.
Shipping list number: 98-0013-S.
Issue: Issue 19, Oct. 9, 1997.
Physical Description:volumes ; 28 cm.
Current issue with updates is available via Internet from the USPS web site (PDF version only). Address as of 3/20/01: http://pe.usps.gov/; current access is available via PURL.
Publication Frequency:Semiannual, 1992-
ISSN:1058-0875