Cite
APA Citation
Unknown (2011). A more perfect heaven : how Nicolaus Copernicus revolutionized the cosmos. New York : Walker Pub. http://access.bl.uk/ark:/81055/vdc_100033983421.0x000001
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Unknown (2011). A more perfect heaven : how Nicolaus Copernicus revolutionized the cosmos. New York : Walker Pub. http://access.bl.uk/ark:/81055/vdc_100033983421.0x000001