TY  - BOOK
TI  - Structure of language and its mathematical aspects
SN  - 0821813129 (print) | 9780821892275 (online)
PY  - 1961///
CY  - Providence
PB  - American Mathematical Society
UR  - http://www.ams.org/psapm/012 | http://dx.doi.org/10.1090/psapm/012
ER  -