Persistent and Finagling
- Blwyddyn: 1971
- Gwlad: Canada
- Genre: Documentary
- Stiwdio: ONF | NFB
- Allweddair: air pollution
- Cyfarwyddwr: Michael Rubbo
- Cast:
6.00 2010 HD
8.00 2024 HD
7.40 2021 HD
1 2021 HD
8.00 2023 HD
1 1970 HD
1 1989 HD
2.00 1984 HD
1 2016 HD
7.70 2014 HD
7.00 2024 HD
7.00 2024 HD
6.94 2024 HD
7.80 2024 HD
7.00 2024 HD
6.75 2024 HD
6.20 2024 HD
6.30 2024 HD
6.30 2024 HD
6.20 2024 HD