00345nam a2200109 a 450000500170000002000180001708200150003510000220005024500980007226000440017030000210021420251203111553.0  a9780486210100  a512.7bDED  aDedekind, Richard  aEssays on the theory of numbersbcontinuity and irrational numbers,nature and meanings of num  aNew YorkbDover publications, Incc1963  a115p.c20cm.bPB