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    <subfield code="a">Klatte, Kathleen A.,</subfield>
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    <subfield code="a">BEAVERS :</subfield>
    <subfield code="b">A WETLANDS KEYSTONE SPECIES /</subfield>
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    <subfield code="t">Busy beavers -- </subfield>
    <subfield code="t">A beaver's body -- </subfield>
    <subfield code="t">What big teeth! -- </subfield>
    <subfield code="t">Ecosystem engineers -- </subfield>
    <subfield code="t">Wonderful wetlands -- </subfield>
    <subfield code="t">Who else lives there? -- </subfield>
    <subfield code="t">Why are beavers important? -- </subfield>
    <subfield code="t">What if there were no Beavers? -- </subfield>
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    <subfield code="a">"Our natural world is increasingly fragile. Now more than ever, it's important to learn about keystone species-those species whose removal can topple entire ecosystems. Beavers create and maintain their own habitat. They alter the landscape to suit themselves, thereby providing homes for a myriad of other plants and animals. This book introduces kids to the concept of keystone species and describes beavers' important role in their habitat. Simple text, full color photographs, and fascinating fact boxes help kids understand beavers, their wetland habitat, and all the other creatures that share their ecosystem"--</subfield>
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