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082 _a301।297/WEA
082 _bHNW-29555
100 _aWeaver H। G।
245 4 _aThe Mainspring Of Human Progress
260 _b"The Foundation For Econo। Educa।, New York।"
260 _c--
300 _a279
600 _aWeaver H। G।
630 _aThe Mainspring Of Human Progress
700 _aWeaver H। G।
730 _aThe Mainspring Of Human Progress
942 _cBOOK
999 _c1224556
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