Of man and manta : a trilogy /
Anthony, Piers.
Anthony, Piers.Omnivore.
Anthony, Piers.Orn.
Anthony, Piers.Ox.
[London] : Corgi Books,
1986.
Omnivore. Originally published: London : Faber, 1969 -- Orn. Originally published: London : Corgi, 1977 -- Ox. Originally published: United States : s.n., 1976.