TY - `BOOK` AU - Rimlinger, Frank TI - Pregroups and Bass-Serre theory PB - American Mathematical Society CY - Providence, RI PY - 1987 LA - eng SE - VIII, 73 S. T2 - Memoirs of the American Mathematical Society M1 - 361 SN - 0-8218-2421-X SN - 978-0-8218-2421-4 CN - 88 W 24 CN - Rimli AN - UBHD-3501364 ER -