Published by New South Publishing and The University of New South Wales. 2011. Small square 4to. pp.228. Illustrated in colour and black & white.index, bibliography, notes. Original yellow hardcover with vignette on the upper board. in pictorial dust wrapper.
New York, Published by Scholastic Book Services, 1969. Paperback, Third Printing.8vo. pp.128.Illustrated in black & white Endpapers and title page have sellotape marks .Pages toned uniformly. A Good working copy. The Discovery of Pluto.