| LC control no. | n 83039156 |
|---|---|
| Descriptive conventions | rda |
| Personal name heading | Kieffer, Karl Werner, 1912- |
| Birth date | 1912 |
| Found in | His Die kritische Schwelle, 1975. Information from 678 converted Jan. 5, 2015 (Wirtschaftsingenieur der Berliner Technischen Hochschule) |
| Invalid LCCN | n 79050708 |
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