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On the homotopy groups of unions of spaces

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Commentarii Mathematici Helvetici

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Dedicated to Prof. H. Hopf on his 60th birthday

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Hilton, P.J. On the homotopy groups of unions of spaces. Commentarii Mathematici Helvetici 29, 59–92 (1955). https://doi.org/10.1007/BF02564271

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  • DOI: https://doi.org/10.1007/BF02564271

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