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The Pulse of the Earth
  • PDF
  • English
  • Year: 1942
  • Author: J. H. F. Umbgrove (auth.)
The Pulse of the Earth
  • PDF
  • English
  • Year: 1971
  • Author: J. H. F. Umbgrove D.Sc.(Leyden) (auth.)
Symphony of the Earth
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  • English
  • Year: 1950
  • Author: J. H. F. Umbgrove D. Sc.; Hon. F.R.S.E. Memb. R. Netherl. Ac. Sc. Hon. Memb. N.Y. Ac. Sc. (auth.)
Factor analysis applied to developed and developing countries
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  • English
  • Year: 1970
  • Author: J. H. F. Schilderinck (auth.)
Regression and factor analysis applied in econometrics
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  • English
  • Year: 1978
  • Author: J. H. F. Schilderinck (auth.)
World Guide to Abbreviations of Organizations
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  • English
  • Year: 1991
  • Author: F. A. Buttress, H. J. Heaney (auth.)
Production and income relations in the Netherlands: A Semi — regional input — output analysis
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  • English
  • Year: 1970
  • Author: J. H. F. Schilderinck, H. J. N. Sinner (auth.)
Applied Calculus
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  • English
  • Year: 1966
  • Author: D. J. Bell and F. H. George (Auth.)