Heinz Sielmann, Walon Green
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Filmography in the catalog
Credited on 2 films (1968) — matched by name in the Creator or Credits field.
| Year ▲ | Title | Creator | Length | Format | Color | Sound |
|---|---|---|---|---|---|---|
| 1968 | Reptiles and Amphibians | NATL GEOGRAPHIC SOCIETY 17TH AND M STS NW WASHINGTON DC 20036 | 1680 | 16mm | Color | sound |
| 1968 | Reptiles and Amphibians | Heinz Sielmann, Walon Green | 12:00 |