1. Everyman's Encylopedia, 3rd Edition.
2.The New Universal Encylopedia.
3. The Modern Marvels Encylopedia.
1 பெளதிகப் புவியியலும் புவியுமைப்பியலும். எல். டி. ஸ்டாம்ப், 1967, தமிழ் வெளியீட்டுக் கழகம்.
2. Antarctica, 1959, V. Lebedev, FLPH, Moscew.
3. Physical Geography, P. Lake, 1958, Cambridge University Press,
4. The ocean, F. O. Ommaney, 1961, Oxford University.
5. Principles of Physical Geography, A. Das Gupta and A. N. Kapoor, 1977, S. Chand and Company.
1. Our friend the Ocean, Prof. Alexei Dobrovolksi, Soviet Land.
2. Man’s Attempts to probe the mysteries of Ocean’s Depth, UNESCO, 4–9–60, The Mail.
3. Solving Secrets of the Seven Seas, E. R., Yarham, 18 - 6 -–61, The illustrated Weekly of India.
4. Race for oil in North Sea, E. R. Yathama, 11–8–63, The Sunday Standard,
