1. Editorial 33

   • Eric R. Scerri

   EditorialNotes 29 September 2009 Pages: 131 - 133

2. Oxidation number: issues of its determination and range

   • Jozef Šima

   OriginalPaper 31 May 2009 Pages: 135 - 143

3. Explanation and theory formation in quantum chemistry

   • Hinne Hettema

   OriginalPaper 20 August 2009 Pages: 145 - 174

4. William H. Brock: William Crookes (1832–1919) and the Commercialization of Science

   • Robert K. DeKosky

   Book Review 25 June 2009 Pages: 175 - 180

5. Eric Scerri: Collected papers on philosophy of chemistry

   • Lee McIntyre

   Book Review 25 August 2009 Pages: 181 - 182

6. Klaus Ruthenberg and Jaap van Brakel (eds): Stuff. The nature of chemical substances

   • Martín Labarca
   • Olimpia Lombardi

   Book Review 19 September 2009 Pages: 183 - 186