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D. S. Halacy
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D. S. Halacy
Born 1919
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6 books
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What makes a computer work?
D. S. Halacy
What makes a computer work?
D. S. Halacy
· 1973 · 64 pages
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Earth, water, wind, and sun, our energy alternatives
D. S. Halacy
Earth, water, wind, and sun, our energy alternatives
D. S. Halacy
· 1977 · 186 pages
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Genetic revolution: shaping life for tomorrow
D. S. Halacy
Genetic revolution: shaping life for tomorrow
D. S. Halacy
· 1974 · 207 pages
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How to improve your memory
D. S. Halacy
How to improve your memory
D. S. Halacy
· 1977 · 63 pages
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The coming age of solar energy
D. S. Halacy
The coming age of solar energy
D. S. Halacy
· 1963 · 241 pages
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Ice or fire?
D. S. Halacy
Ice or fire?
D. S. Halacy
· 1978 · 212 pages
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