(ac99) Life of Hoover (5) From early childhood through his interesting career. ... (84 , 52, 84a, 132, 180) Livingstone (6) Picture made along the trails in Africa travelled by this famous explorer. (4) The Life of ... (ac32) The Hottest Flame in the World (4) Dr. Irving Langmuir tells of his work with vacuum tubes and hydrogen, developing atomic-hydrogen welding process. ... (161, 186) Radio Active Rays (1 ) Technical study, with diagrams and experiments, of disintegration of certain minerals.
Title | : | 1000 and One |
Author | : | |
Publisher | : | - 1931 |
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