hard Wollheim, Art and its objects, p.1, 2nd edn, 1980, Cambridge University Press, ISBN 0521 29706 0↑ Jerrold Levinson, The Oxford Handbook of Aesthetics, Oxford university Press, 2003, p5. ISBN 0-19-927945-4↑ Jerrold Levinson, The Oxford Handbook of Aesthetics, Oxford university Press, 2003, p16. ISBN 0-19-927945-4↑ R.G. Collingwood's view, expressed in The Principles of Art, is considered in Wollheim, op. cit. 1980 pp 36-43↑ Jerrold Levinson, The Oxford Handbook of Aesthetics, Oxford university Press, 2003, p5. ISBN 0-19-927945-4↑ Jerrold Levinson, The Oxford Handbook of Aesthetics, Oxford university Press, 2003, p5. ISBN 0-19-927945-4Art හා සබැඳි මාධ්‍ය විකිමාධ්‍ය කොමන්ස් හි ඇත.සරල ඝනාකාර අපිච්ඡදයTransverse section of pyramidal substance of pig kidney, the blood vessels of which are injected; a. Large collecting tube, cut across, lined with cylindrical epithelium b. Branch of collecting tube, cut across, lined with cubical epithelium c, d. Henle’s loops cut acr