Comet Halley Returns: a Teacher's Guide 1985-1986 By unknown Books / Paperback Nature › Space Publisher: National Aeronautics and Space Administration, January 1984 Price $16.16 Free Shipping Send to a friend Used - Good Good condition. (halley's comet, handbooks, solar system) 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. $16.16 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.