No longer an official government publication; no longer available to depository libraries after volume 6, numbers 1 (July 2011)
Mode of access: Internet from the NIDA web site. Address as of 2/19/08: http://www.nida.nih.gov/ascp/; access is available via PURL through July 2011 issue
Vol. 4, issue 1 (Dec. 2007); title from homepage (viewed Apr 17, 2008)