Buy from our bookstore and 25% of the cover price will be given to a school of your choice to buy more books. *15% of eBooks.
Books By John Robert Christianson - Author
John Robert Christianson is professor emeritus of history at Luther College in Decorah, Iowa, and was made Knight of the Royal Norwegian Order of Merit by King Harald V in 1995. He is the author of On Tycho's Island and coeditor of Tycho Brahe and Prague: Crossroads of European Science.