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Sea Level Datum of 1929

Known as: NVGD29, NGVD 29, National Geodetic Vertical Datum of 1929 
The Sea Level Datum of 1929 was the vertical control datum established for vertical control surveying in the United States of America by the General… 
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Papers overview

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2008
2008
This World-Wide-Web publication was prepared by an agency of the United States Government. Neither the United States Government… 
Review
2007
Review
2007
Base map from USGS Burr Oak 7.5' Digital Raster Graphic (IGS GIS file DRGB40.TIF) which was scanned from the Burr Oak 7.5… 
Highly Cited
2004
Highly Cited
2004
Following the environmental sieve concept, the setting in which the recruitment of Taxodium distichum occurs in, becomes… 
1997
1997
The Hydrologic Data Development System is a prototype system of spatial data and menu-driven programs that allows user… 
1993
1993
Master files scanned at 600 ppi (24-bit Color and 256 greyscale) using Capture Perfect 3.0.82 on a Canon DR-9080C in TIF format… 
Review
1983
Review
1983
The Little Androscoggin River valley aquifer, a 15-squaremile sand and gravel valley-fill aquifer in southwestern Maine, is the… 
Review
1983
Review
1983
Purpose and scope: This report presents results from an evaluation of geologic data collected and compiled as part of a… 
Review
1982
Review
1982
Marsh periwinkles of 5 to 7 mm in shell height were eaten regularly by blue crabs. Fractures marking unsuccessful crab attacks…