Incoming Resources
- Penguin Books, Harmondsworth, Eng., New York, 1981
- Penguin Books, Harmondsworth, Eng., New York, 1976, c1962
- Penguin Books, Harmondsworth, Eng., Baltimore, 1972
- Penguin Books, Harmondsworth, Eng., New York, 1980. c1977
- Penguin Books, Harmondsworth, Eng., New York, N.Y., 1980
- Penguin Books, Harmondsworth, Eng., New York, 1980
- Penguin Books, Harmondsworth, Eng., New York etc., 1977, c1969
- Penguin Books, Harmondsworth, Eng., New York, 1979, c1966
- Penguin Books, Harmondsworth, Eng., 1973
- Penguin Books, Harmondsworth, Eng., Baltimore, 1973