| LC control no. | n 80145955 |
|---|---|
| Descriptive conventions | rda |
| Personal name heading | Helm, Georg Ferdinand, 1851-1923 |
| Birth date | 1851 |
| Death date | 1923 |
| Profession or occupation | Author |
| Found in | His Die Energetik nach ihrer geschichtlichen entwicklung, 1898. |
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