1. The determination of trace levels of arsenic in human biological materials

   • Robert R. Lauwerys
   • J. P. Buchet
   • H. Roels

   Review Article Pages: 239 - 247

2. Mutagenic and alkylating metabolites of halo-ethylenes, chlorobutadienes and dichlorobutenes produced by rodent or human liver tissues

   • Helmut Bartsch
   • Christian Malaveille
   • Ghyslaine Planche

   Original Investigations Pages: 249 - 277

3. Alkylation of RNA by vinyl bromide metabolites in vitro and in vivo

   • H. Ottenwälder
   • R. J. Laib
   • H. M. Bolt

   Original Investigations Pages: 279 - 286

4. Action of N-isopropyl-α-(2-methylhydrazino)-p-toluamide hydrochloride (procarbazine hydrochloride) in the germ tissue of mice: dominant lethal effects

   • G. T. Roberts
   • F. M. Johnson
   • R. K. Sharma

   Original Investigations Pages: 287 - 294

5. Lead-induced leukocytosis in female mice

   • G. R. Hogan
   • D. P. Adams

   Original Investigations Pages: 295 - 300

6. 1,3-Bispyridinium-dimethylether mono- and dioximes: synthesis, reactivating potency and therapeutic effect in experimental poisoning by organophosphorus compounds

   • V. Simeon
   • K. Wilhelm
   • Z. Binenfeld

   Original Investigations Pages: 301 - 306

7. The interaction between ethanol and manganese in rat brain

   • S. Singh
   • Girja S. Shukla
   • Satya V. Chandra

   Original Investigations Pages: 307 - 316

8. Ophthalmological and pharmacological studies after administration of clonidine in rats

   • I. Weisse
   • W. Hoefke
   • H. Kreuzer

   Erratum Pages: 317 - 317

9. Annnouncements

   Announcement Pages: 318 - 318