1. The search for plant precursors of cortisone

   • D. S. Correll
   • B. G. Schubert
   • W. O. Hawley

   OriginalPaper Pages: 307 - 375

2. Hard fibres

   • W. Bally
   • F. Tobler

   OriginalPaper Pages: 376 - 399

3. Book reviews

   BookReview Pages: 400 - 400