Commentariolus / Copernicus, Nicolaus, 1473-1543 -- Letter against Werner / Copernicus, Nicolaus, 1473-1543 -- Narratio prima / Rheticus.
"The "Commentariolus" is Copernicus's most lucid exposition of his system. The "Letter against Werner" throws
light on development of Copernicus's thought. The "Narratio prima" is earliest printed presentation of the new astronomy."--Dover publications.
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