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small mammals
Clethrionomys glareolus
2
International Biological Program
2
Microtus arvalis
2
Apodemus agrarius
1
Apodemus flavicollis
1
Micromammalia
1
Microtus oeconomus
1
Sorex araneus
1
assimilation
1
bagno Wizna
1
cultivated Wizna fen
1
density
1
digestibility
1
ecological niches
1
energetic balance
1
energy values
1
food
1
habitat
1
maintenance costs
1
natural foods
1
numbers
1
rozmieszczenie
1
środowisko
1
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