UDC Consortium, PO Box 90407, 2509 LK
The Hague, The Netherlands
Tel.: (+31) 70 314 0509 Fax: (+31) 70 314 0450 attn UDC
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5
Mathematics and natural sciences
50 Generalities about the pure sciences
| 501 | Generalities about the pure sciences. Mathematical sciences in the broad sense |
| 502/504 | Environmental science. Conservation of natural resources. Threats to the environment and protection against them |
| 502 | The environment and its protection |
| 502.3/.7 | Parts of the environment |
| 504 | Threats to the environment. Including: Pollution |
Last updated: 22
November 2006 
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