Directed by
| Bert Haanstra | ||
Writing Credits
| Anton Koolhaas | ||
| Bert Haanstra | ... | (uncredited) |
| Dick Hillenius | ... | (additional dialogue) |
| Jan Veen | ... | (additional dialogue) |
Cast
| Bert Haanstra | ... | Narrator (voice) | |
 |
Anton Koolhaas | ... | Narrator (voice) |
| Stephen Murray | ... | Narrator (British English language version) (voice) | |
| Alexander Scourby | ... | Narrator (US English language version) (voice) | |
| Leonid Brezhnev | ... | Self (archive footage) (uncredited) | |
| Randee Lynne Jensen | ... | Girl at Beach (uncredited) | |
| Richard Nixon | ... | Self (archive footage) (uncredited) | |
Produced by
| Bert Haanstra | ... | producer (uncredited) |
Music by
| Otto Ketting | ||
Cinematography by
| Anton van Munster | ... | (photography) |
Editing by
| Bert Haanstra | ... | (uncredited) |
Second Unit Director or Assistant Director
| Rolf Orthel | ... | first assistant director |
Sound Department
| Sharron Miller | ... | sound effects editor: English language version / supervising sound editor: English language version |
| Ed Pelster | ... | sound mixer / sound |
Camera and Electrical Department
| Naresh Bedi | ... | camera operator: additional shots |
| Peter Creutzberg | ... | camera operator: additional shots |
| William H. Eddy | ... | camera operator: additional shots (as Eddy William) |
| Bert Haanstra | ... | camera operator: additional shots |
Editorial Department
| Rob Hakhoff | ... | assistant editor (as Rob Hakhof) |
Additional Crew
| Gerard Baerends | ... | scientific advisor (as Prof. Dr. Gerard P. Baerends) |
Thanks
| Vivian Fuchs | ... | thanks (as Sir Vivian Fuchs) |
| Jane Goodall | ... | thanks (as Dr. Jane van Lawick-Goodall) |
| H.F. Harlow | ... | thanks (as Dr. H.F. Harlow) |
| J.P. Kruijt | ... | thanks (as Dr. J.P. Kruijt) |
| Konrad Lorenz | ... | thanks (as Prof Dr. Konrad Lorenz) |
| J. Nicolai | ... | thanks (as Dr. J. Nicolai) |
| B. Stonehouse | ... | thanks (as Dr. B. Stonehouse) |
| Hugo Van Lawick | ... | thanks |
| Juri Voogd | ... | thanks |
