1. Life history of hamadryas baboons: Physical development, infant mortality, reproductive parameters and family relationships

   • H. Sigg
   • A. Stolba
   • V. Dasser

   OriginalPaper Pages: 473 - 487

2. Behavioral changes during weaning in captive chimpanzees

   • Janice R. Horvat
   • Helena C. Kraemer

   OriginalPaper Pages: 488 - 499

3. Wild orangutan birth at tanjung puting reserve

   • Biruté M. F. Galdikas

   OriginalPaper Pages: 500 - 510

4. The development of grooming, sociosexual behavior, play and aggression in captive baboons in their first two years

   • George H. Young
   • Anthony M. Coelho Jr.
   • Claud A. Bramblett

   OriginalPaper Pages: 511 - 519

5. Training a capuchin (Cebus apella) to perform as an aide for a quadriplegic

   • Mary Joan Willard
   • Karen Dana
   • Paul Corcoran

   OriginalPaper Pages: 520 - 532

6. A fossil baboon skull from the lower Omo basin, southwest Ethiopia

   • Mitsuo Iwamoto

   OriginalPaper Pages: 533 - 541

7. Longitudinal somatometrical study on the growth patterns of newborn Japanese monkeys

   • Yuzuru Hamada

   OriginalPaper Pages: 542 - 557

8. A case of inter-unit-group encounter in chimpanzees of the mahale mountains

   • Kenji Kawanaka

   Short Communications Pages: 558 - 562

9. Blue monkey (Cercopithecus mitis stuhlmanni) predation on galagos

   • Thomas M. Butynski

   Short Communications Pages: 563 - 566

10. Observer bias in selection of study group in baboon field studies

    • M. Sharman
    • R. I. M. Dunbar

    Short Communications Pages: 567 - 573

11. Ecogeographic segregation of macaque species

    • Jack Fooden

    Short Communications Pages: 574 - 579

12. Birth in free-ranging howler monkeysAlouatta seniculus

    • Ranka Sekulic

    Short Communications Pages: 580 - 582

13. Observation of delivery behavior in the rhesus monkey

    • Masayuki Adachi
    • Ryoichi Saito
    • Yoshikuni Tanioka

    Short Communications Pages: 583 - 586

14. The influence of male presence or absence on the reproductive cycle of celebes black ape females (Macaca nigra)

    • Irwin S. Bernstein
    • Katherine Bruce
    • Lawrence Williams

    Short Communications Pages: 587 - 591

15. Ovulation pattern in successive cycles in the baboon

    • A. A. Shaikh
    • S. A. Shaikh
    • J. W. Goldzieher

    Short Communications Pages: 592 - 595

16. Circadian variations in serum thyroid hormones inMacaca fascicularis

    • Alias B. Kamis

    Short Communications Pages: 596 - 597

17. Lactose intolerance in captive nocturnal prosimians (Perodicticus potto): A twenty-one year record

    • U. M. Cowgill
    • S. J. States

    Short Communications Pages: 598 - 604

18. Book reviews

    • Toshitaka Iwamoto
    • John R. Oppenheimer
    • Osamu Takenaka

    BookReview Pages: 605 - 609

19. Books received

    Note Pages: 610 - 610