Mode of access: internet from the USGS web site. Address as of 11/6/06: http://pubs.usgs.gov/of/2006/1204/; current access via PURL.
General Note:
Title from title screen (viewed on Nov. 6, 2006). Contains aeromagnetic and gravity data collected in Afghanistan between 1911 and 1967. "Posted September 2006." "USGS Afghanistan product no. 72."