1. The four horsemen

   • Virginia Abernethy

   Editorial Pages: 299 - 300

2. Energy and human evolution

   • David Price

   OriginalPaper Pages: 301 - 319

3. Policies on population, land use, and environment in Rwanda

   • John F. May

   OriginalPaper Pages: 321 - 334

4. The human population carrying capacity of the chesapeake bay watershed: A preliminary analysis

   • Robert L. McConnell

   OriginalPaper Pages: 335 - 351

5. Immigration and internal migration “flight”: A California case study

   • William H. Frey

   OriginalPaper Pages: 353 - 375

6. Book reviews

   • B. Meredith Burke

   BookReview Pages: 377 - 380

7. A special section for correspondence and controversy

   • Eloise Anderson

   Private Bag Pages: 381 - 385

8. Translating word problems to number problems

   • Albert A. Bartlett

   Private Bag Pages: 387 - 390