1. Design and construction of an improved, portable, air-ion counter

   • N. F. Moody

   OriginalPaper Pages: 169 - 184

2. Long range migration of aphids into Sweden

   • Staffan Wiktelius

   OriginalPaper Pages: 185 - 200

3. The influence of natural short photoperiodic and temperature conditions on plasma thyroid hormones and cholesterol in male Syrian hamsters

   • M. K. Vaughan
   • G. C. Brainard
   • R. J. Reiter

   OriginalPaper Pages: 201 - 210

4. A search for associations between weather and the onset of human parturition

   • D. M. Driscoll
   • D. G. Merker

   OriginalPaper Pages: 211 - 224

5. Snow goose migration phenology is related to extratropical storm climate

   • T. J. Smith III
   • B. P. Hayden

   OriginalPaper Pages: 225 - 233

6. Notice

   Announcement Pages: 234 - 234

7. Aerosol-bibliography 1980–1983

   • Bodo Gottschalk

   Legacy Pages: 235 - 255

8. The International Union of Biological Sciences (IUBS)

   Editorial Pages: 256 - 256