261
by Buckley, Peter J, 1949-
Published 1992
262
263
by Tselichtchev, Ivan.
Published 2012
264
Published 2011
265
Published 1990
266
267
by Mulroney, Brian, 1939-
Published 1990
268
by Frenkel, Jacob A.
Published 1992
269
Published 1992
270
by Khor Kok Peng, Martin
Published 1992
271
Published 1991
272
by Ghosh, Atish R.
Published 1994
273
Published 1996
274
Published 1997
275
276
Published 1994
277
by Vernon, Raymond
Published 1991
278
Published 2001
279
Published 1999
280
Published 1998