241
Published 1991
American Chemical Society

242
Published 1991
American Chemical Society

243
Published 1992
American Chemical Society

244
Published 1992
American Chemical Society

245
Published 1992
American Chemical Society

246
Published 1992
American Chemical Society

247
Published 1992
American Chemical Society

248
Published 1992
American Chemical Society

249
Published 1993
American Chemical Society

250
Published 1993
American Chemical Society

251
Published 1993
American Chemical Society

252
Published 1994
American Chemical Society

253
Published 1995
American Chemical Society

254
Published 1998
American Chemical Society

255
Published 1995
American Chemical Society

256
Published 1997
American Chemical Society

257
Published 1999
American Chemical Society

258
Published 1999
American Chemical Society

259
Published 1999
American Chemical Society

260
Published 2000
American Chemical Society