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@@ -213,6 +213,9 @@ I did the work. Essentially all work was done by Gerald Evenden. <p>
<ul>
+<li> <a href="http://pubs.er.usgs.gov/usgspubs/pp/pp1395">Snyder, 1987: Map
+projections; a working manual</a>.<p>
+
<li> <a href="http://ftp.dfg.ca.gov/Public/BDB/Tools/proj4/proj_api.zip">
PROJ.4 VB Wrappers</a> from Eric G. Miller. <p>