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The Story of Lubricating Oil (1949)

10 /0
Ngolo | | 22 mphindi |

This color educational film is about how lubricants are derived from crude petroleum and how to improve the quality of lubricating oil. This is a 1949 film.

Mtundu:

Osewera: ,

Ogwira ntchito: ,

Subtitle: English France Germany Spain Dutch Korea Japan ETC.

Tulutsani: Aug 19, 1949

Kutchuka: 0.572

Chilankhulo:

Situdiyo:

Dziko: United States of America