TY  - BOOK
AU  - Penner,R.C.
AU  - Harer,J.L.
TI  - Combinatorics of train tracks
SN  - 9780691025315 (pbk.)
U1  - 511.6 PEN 
PY  - 1992///
CY  - Princeton
PB  - Princeton University Press
KW  - Geodesics (Mathematics)
KW  - CW complexes
KW  - Combinatorial analysis
N1  - TB1420
$ 99.95
ER  -