New Zealand mudsnail sightings distribution : NAS--nonindigenous aquatic species.

Bibliographic Details
Corporate Authors:	Nonindigenous Aquatic Species Program (U.S.), Geological Survey (U.S.)
Format:	Government Document Map Database
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2008-]
Subjects:	New Zealand mudsnail > North America > Maps.
Online Access:	https://purl.fdlp.gov/GPO/LPS99458

Description
Published:	Began in 2008.
Item Description:	Title from HTML home page last updated April 10, 2008 (viewed on Aug. 7, 2008). Shows sightings from 1987 to present. Includes location map. Electronic resource.
Physical Description:	1 electronic map : HTML file.
Publication Frequency:	Updated daliy, 2008-
Format:	Mode of access: Internet from the USGS web site. Address as of 8/7/08: http://nas.er.usgs.gov/taxgroup/mollusks/newzealandmudsnaildistribution.asp ; current access via PURL.