1. Social organization of the crab-eating monkey

   • Yoshio Furuya

   OriginalPaper Pages: 285 - 336

2. Development of vocal communication in man-raised Japanese monkeys I.

   • Rumiko Takeda

   OriginalPaper Pages: 337 - 380

3. On the social change of hanuman langurs (Presbytis entellus) in their natural condition

   • Yukimaru Sugiyama

   OriginalPaper Pages: 381 - 418

4. The brain of the mountain gorilla (Gorilla gorilla beringei)

   • Hiroshi Hosokawa
   • Toshiro Kamiya
   • Kazushige Hirosawa

   OriginalPaper Pages: 419 - 449

5. Bibliography of the studies on non-human primates in Japan

   OriginalPaper Pages: 451 - 457

6. Short history of the ecological and sociological studies on non-human primates in Japan

   • Yukimaru Sugiyama

   OriginalPaper Pages: 457 - 460

7. Postscript by the editor

   EditorialNotes Pages: 461 - 462