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Networks, lines, and fields / John Douglas Ryder.
- 537.5 R9923 1977
- Ryder, John Douglas, 1907-
- Prentice-Hall,
- c1955, 1977.
- New Delhi :
-
Electronic fundamentals and applications / John D. Ryder.
- 621.381 R9923 1969
- Ryder, John Douglas, 1907-.
- Prentice-Hall of India,
- 1969.
- New Delhi :
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Acute Respiratory Infections In South-East Asia / Dr. R. Douglas , Dr. V. Oddo & Dr. S. Pattanayak.
- World Health Organization,
- 1986.
- New Delhi :
-
Rural India in transition / Douglas Ensminger.
- 856.1
- All India Panchayat Parishad,
- 1972.
- New Delhi :