Urban perceptual modeling : a speculative framework for artistic intervention/ by Ledwidge, Matthew Jacob.

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Introduction to noise analysis / by 384939 Harris, R. W., Ledwidge, T. J.

Step on a crack / by Patterson, James, 1947-, 455737, Ledwidge, Michael 199956

Antibodies to acetylcholine receptor in parous women with myasthenia: evidence for immunization by fetal antigen. by Matthews, I, Sims, G, Ledwidge, S, Stott, D, Beeson, D, Willcox, N, Vincent, A