Description
Everyone knows that petroleum comes out of the earth, but the question is how did it get there, and what is it made of? The answer to these questions are given simply and accurately in this animated programme.
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1950-07-15
N/A
11 min
Everyone knows that petroleum comes out of the earth, but the question is how did it get there, and what is it made of? The answer to these questions are given simply and accurately in this animated programme.