TY  - BOOK
AU  - Fritsch, Rudolf and Fritsch, Gerda
AU  - Fritsch, Gerda ; jt. auth.
AU  - Peschke, Julie ; tr.
TI  - The four-color theorem; history, topological foundations, and idea of proof
U1  - 511.5 
PY  - 1998///
CY  - New York
PB  - Springer-Verlag
N1  - "Purchased under NBHM grant for the year 1998-99"
ER  -