| LC control no. | n 81069600 |
|---|---|
| Personal name heading | Klapper, Helmut |
| Found in | Flüsse und Seen der Erde, 1980 (a.e.) t.p. (Dr. sc. Helmut Klapper) His Control of eutrophication in inland waters, 1991: CIP t.p. (Helmut Klapper, D. Sc., Magdeburg Research Dept. Water Protection, Germany) data sht. (b. 2-6-32) Acidic mining lakes, 1998: CIP t.p. (Helmut Klapper) data sheet (b. 06-02-1932) |
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