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Converting Lambert Conformal (x, y) of spheroid to (lon, lat) of NAD83 with proj/cs2cs?

Revised Trial: Correct? According to Andre Joost advice, I tried with "+towgs84=0,0,0", and the both two ways seem to get the same answer that mkennedy posted below. So, just to make sure, anybody ...
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How to fix PJ_healpix.c in PROJ.4?

Michael Speth and i are in the process of fixing the PROJ.4 implementation of the HEALPix map projection (see http://trac.osgeo.org/proj/browser/trunk/proj/src/PJ_healpix.c for the current buggy ...