161 IUPAC 1991 / Maurice Williams
166 News & Views
168 Letter to the Editor
168 Affiliate Affairs
171 Commission & Committee News
172 PAC Review
174 Provisional Recommendations
175 Organometallic chemistry
179 Problemes of the environment
181 Recent Reports
182 Environmental particles
186 Perspectives in catalysis
189 Publications
192 IUPAC Accounts for 1991
196 Conferences
198 Conference Calendar
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