261
Published 1978
Gabler Verlag

262
by Heald, Colin, Smith, Archibald Campbell Kennedy
Published 1974
Macmillan Education UK

263
Published 1986
Macmillan Education UK

265
Published 1989
Macmillan Education UK

266
by McAuliffe, T.R.
Published 1980
Palgrave Macmillan

267
by Borrebaeck, Carl A.K., Hagen, Inger
Published 1989
Palgrave Macmillan UK

268
by Byrom, David
Published 1991
Palgrave Macmillan

269
Published 1992
Palgrave Macmillan

270
by Husaini, S.Waqar Ahmed
Published 1980
Macmillan Education UK

271
by Bell, Peter Charles
Published 1971
Macmillan Education UK

272
by Coombs, J.
Published 1986
Palgrave Macmillan UK

273
Published 1989
Palgrave Macmillan

274
by Yuan, Robert
Published 1988
Palgrave Macmillan

275
Published 2003
Springer US

276
Published 2004
Springer Berlin Heidelberg

277
Published 2004
Springer Berlin Heidelberg

278
Published 2004
Springer Berlin Heidelberg

279
Published 1995
Springer Berlin Heidelberg

280
by Bent, S.A.
Published 1987
Palgrave Macmillan