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035   $a(EXLCZ)995470000002374923
100   $a20070831d2007      ua             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aHow the heart works$b[electronic resource] $eheart contraction and blood flow
210  1$a[Bethesda, Md]. :$cU.S. Dept. of Health and Human Services, National Institutes of Health, National Heart, Lung, and Blood Institute,$d[2007?]
215   $a1 electronic text $cHTML file
300   $aTitle from title screen (viewed on Aug. 31, 2007).
517   $aHow the heart works 
606   $aHeart$xContraction
606   $aBlood flow
615  0$aHeart$xContraction.
615  0$aBlood flow.
712 02$aNational Heart, Lung, and Blood Institute.
801  0$bGPO
801  1$bGPO
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912   $a9910696188403321
996   $aHow the heart works$93461720
997   $aUNINA