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Showing 1 - 4 of 4 Results
1.
Introduction to Logic and to the Methodology of the Deductive Sciences
Introduction to Logic and to the Methodology of the Deductive Sciences by Tarski, Alfred, Helmer, Olaf ISBN: 9780486284620 List Price: $12.95
$2.20 (Save 83%)
2.
Looking Forward: A Guide to Futures Research - Olaf Helmer - Hardcover
Looking Forward: A Guide to Futures Research - Olaf Helmer - Hardcover by Helmer, Olaf ISBN: 9780803920170 List Price: $32.50
$140.23
3.
Some Potential Societal Developments : 1970-2000
Some Potential Societal Developments : 1970-2000 by DeBrigard, Raul, Helmer, Olaf ISBN: 9780318144221 List Price: $10.50

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4.
Looking Forward : A Guide to Futures Research
Looking Forward : A Guide to Futures Research by Helmer, Olaf ISBN: 9780835784306 List Price: $116.60

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