| First time the teams were restricted to 24. | | First 12 from World Champinship Men 1962. | | 3 teams from each continent - Europe, Asia, America and Africa. |
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Draw 18.01.1966 | | First 8 teams were distributed following the snike system. |
| | From World 1962. | From the continents. | | Group A: | TCH-2 | YUG-8 | CHN-9 | ITA-Eur 10. | Afr-1. | Asi-5. | | Group B: | URS-1 | HUN-7 | GDR-11 | FRA-Eur 8. | USA-Ame 2. | MEX-Ame 4. | | Group C: | ROU-3 | POL-6 | NED-12 | TUR-Eur 11. | Asi-3. | ARG?-Ame 3. | | Group D: | BUL-4 | JPN-5 | BRA-10 | ASI-4. | Afr-2. | Afr-3. |
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| European teams were selected from Europe Men 1963. France, Italy and Turkey were the best not qualified teams. | | America probably from Panamerican Games America Men PG 1963. | | Africa and Asia had to play qualifiyng tournaments. |
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Nitra 23.03:
22.03 was the final date to confirm participation.
| | From World 1962. | From the continents. | | Group A: | TCH-2 | YUG-8 | CHN-9 | ITA-Eur 10. | MOR-Afr 1. | ISR-Asi-5. | | Group B: | URS-1 | HUN-7 | GDR-11 | FRA-Eur 8. | USA-Ame 2. | MEX-Ame 4. | | Group C: | ROU-3 | POL-6 | NED-12 | TUR-Eur 11. | PRK-Asi 3. | ARG?-Ame 3. | | Group D: | BUL-4 | JPN-5 | BRA-10 | MGL-Asi 4. | BEL-Eur 13. | FIN-Eur 14. |
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| Only Morocco from Africa confirmed participation, Belgium and Finland replaced the other African teams. |
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| | From World 1962. | From the continents. | | Group A: | TCH-2 | YUG-8 | CHN-9 | ITA-Eur 10. | FRG-Eur 15. | DEN-Eur-17. | | Group B: | URS-1 | HUN-7 | GDR-11 | FRA-Eur 8. | USA-Ame 2. | CUB-Ame 4. | | Group C: | ROU-3 | POL-6 | NED-12 | TUR-Eur 11. | MGL-Asi 3. | ARG?-Ame 3. | | Group D: | BUL-4 | JPN-5 | BRA-10 | PRK-Asi 4. | BEL-Eur 13. | FIN-Eur 14. |
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| Morocco and Israel were replaced by West Germany and Denmark. Cuba replaced Mexico. | | North Korea and Mongolia were switched between the Groups. | | Argentina and North Korea did not arrive for the Championship. There were no more European teams to replace them. |
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