DMCA
APPROXIMATE MEAN DECLINATION, 2005 (2005)
by
Digital Cartography L. Verhelst
,
J. Domier
,
Illinois State
,
Geological Survey
,
F. Brett Denny
,
W. John Nelson
BibTeX
@MISC{Verhelst05approximatemean,
author = {Digital Cartography L. Verhelst and J. Domier and Illinois State and Geological Survey and F. Brett Denny and W. John Nelson},
title = {APPROXIMATE MEAN DECLINATION, 2005},
year = {2005}
}
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Abstract
Base map compiled by Illinois State Geological Survey from digital data provided by the
