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| 001 | u88387 | ||
| 008 | 130118s2012 gw ger d | ||
| 005 | 20250318100547.0 | ||
| 090 | |a MAG ZS Topo 2012 | ||
| 100 | 1 | |a Huisman, Arie |4 aut | |
| 245 | 1 | 0 | |a Spherical Bird Observatory |b A former bunker of the Dutch Waterline was turned into a bird observatory. |
| 264 | 1 | |c 2012 | |
| 773 | 0 | 8 | |i In |t Topos |w z00143 |g 79(2012)S. 42/43 |
| 591 | 0 | |a MAG ZS Topo 2012 | |
| 655 | 4 | |a Aufsatz | |
| 099 | 1 | |a 20130118 | |