00510nam a22001817a 4500003000400000005001700004008004100021020001500062028002700077082001500104100003300119245005500152250002000207260005600227300001400283655001700297655001400314SNU20150624111542.0150624b        xxu||||| |||| 00| 0 eng d  a0521397839  aElinor Donation bUSA   a530.14 BAI  aBailey, T. N. aR. J. Baston  aTwistors in Mathematics and Physicsc\T. N. Bailey  a.- 	illustrated  a.- New York b:	Cambridge University Pressc@, 1990  a384 pages  aMathematics   aGeometry