http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Quaternary geologic map of the Boston 4⁰ x 6⁰ quadrangle, United States and Canada
Boston 4⁰ x 6⁰ quadrangle, United States and Canada, quaternary geologic map
1 electronic map : HTML, digital, PDF file.
state and province compilations by Joseph H. Hartshorn [and others] ; edited and integrated by Gerald M. Richmond and David S. Fullerton ; prepared in cooperation with the Department of Geology and Geography, University of Massachusetts [and others].
Relief shown by contours and spot heights.
Title from PDF title screen (viewed on Apr. 30, 2008).
Includes text, 2 ancillary maps and index map.
Mode of access: Internet from the USGS web site. Address as of 4/30/08: http://pubs.usgs.gov/imap/i-1420/nk-19/ ; current access via PURL.
Quaternary geologic atlas of the United States
Miscellaneous investigations series (Geological Survey (U.S.)) ; I-1420 (NK-19)