The great cycle predicting and profiting from crowd behavior, the kondratieff wave, and long-term cycles
| Egile nagusia: | |
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| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Chicago, Ill.
Probus Pub. Co.
c1993.
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| Edizioa: | Rev. ed. |
| Gaiak: |