scientific article; zbMATH DE number 475455
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Publication:4273702
zbMath0837.20038MaRDI QIDQ4273702
Publication date: 21 April 1996
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Free products of groups, free products with amalgamation, Higman-Neumann-Neumann extensions, and generalizations (20E06) Groups acting on trees (20E08)
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