Clyde Tombaugh and the Search for Planet X (On My Own Biographies) By Wetterer, Margaret K. and Caple, Laurie A. (ILT) Books / Paperback Books ISBN: 0876149697 / Publisher: Carolrhoda Books, October 1996 Price Starting at $5.59 Free Shipping Send to a friend Add to Wishlist Description The story of the young farm boy who became an astronomer and discovered the planet Pluto at the age... Read More The story of the young farm boy who became an astronomer and discovered the planet Pluto at the age of twenty-four Read Less Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Used - Good Good condition. A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. $5.59 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for Clyde Tombaugh and the Search for Planet X (On My Own Biographies)