Writing Different Kinds Of Letters (1968)
Uses four common situations to show how to write different types of letters, including the personal letter, the business letter,
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Gold And You (1968)
Throughout history, gold has been a sought-after commodity, serving as a reliable form of currency due to its scarcity, durability,
Copper Mining and Smelting (1949)
The film details the process of copper mining and smelting, emphasizing the importance of copper in modern society. It showcases