

Popular Science L-8-5
Documentary
★ 10.0·1949·0h 8m
Gigantic machine combs beach in southern California and retrieves articles lost in sand; synthetic gems made by new chemical process; aviation school ...
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OVERVIEW
Gigantic machine combs beach in southern California and retrieves articles lost in sand; synthetic gems made by new chemical process; aviation school holds classes in grounded transport plane; how seaweed is processed for scientific use.









