James I Potter, Sylvan Fitch, . (1965). Theory of networks and lines. New Delhi: Prentice Hall of India.
James I Potter, Sylvan Fitch, . 1965. Theory of networks and lines. New Delhi: Prentice Hall of India.
James I Potter, Sylvan Fitch, . Theory of networks and lines. New Delhi: Prentice Hall of India. 1965.