TY  - BOOK
TI  - Two-dimensional homotopy and combinatorial group theory 
T2  - London Mathematical Society lecture note series
SN  - 0521447003 (pbk.)
PY  - 1993///
CY  - Cambridge ; | New York, NY
PB  - Cambridge University Press
UR  - http://www.loc.gov/catdir/description/cam026/94176225.html | http://www.loc.gov/catdir/toc/cam027/94176225.html
ER  -