Thud and Blunder in "Knock-Off Time"
- ឆ្នាំ: 1964
- ប្រទេស: United Kingdom
- ប្រភេទ: Animation
- ស្ទូឌីយោ: National Coal Board Film Unit, BFI, TVC London
- ពាក្យគន្លឹះ: safety, coal mining, miners, civil disobedience, collier, psa, public information film
- នាយក:
- ខាស:
