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Snyder's manual is a (the) standard reference in analytical cartography, but if
you need code for projections:
ftp://charon.er.usgs.gov/pub/PROJ.4/PROJ.4.3.2.tar.Z
is source code for a projection tool.
[log in to unmask] Environmental Scientist/GIS Specialist
My thoughts may not reflect Agency or Federal Government policy, plans, etc.....
U. S. Environmental Protection Agency, Region 2, ESD, MMB