00456nam a22001457a 4500020001800000082001100018100002500029245006200054250000800116260004400124300003300168490002400201505003500225650005000260  a9780199608959  a577.68  aValk, Arnoud van der  aThe Biology of Freshwater WetlandscArnold G van der Valk  a2nd  aNew YorkbOxford University Pressc2012  axiii,280 Pagesb23x15 cmbPB  aBiology of habitats  aInclude Bibliography and Index  aWetland ecologyaWetlandsaFreshwater ecology