Long-range forecasting : from crystal ball to computer / J. Scott Armstrong.
Wedi'i Gadw mewn:
Rhifyn: | 2nd ed.. |
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Cyhoeddwyd: |
New York :
Wiley,
c1985.
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Prif Awdur: | |
Pynciau: | |
Fformat: | Llyfr |
Central Library, Level 9
Rhif Galw
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