por Vidyasagar, M. (Mathukumalli), 1947- [autor].
por Spong, Mark W [autor] | Vidyasagar, M. (Mathukumalli), 1947- [autor].
por Spong, Mark W [autor] | Hutchinson, Seth [editor] | Vidyasagar, M. (Mathukumalli), 1947- [autor].