TY  - BOOK
AU  - Akhmanova,Olga
TI  - Optimization of natural communication systems
T2  - Janua linguarum, Series minor
SN  - 90-279-3146-1
U1  - 400 AKH 
PY  - 1977///
CY  - The Hague, Paris
PB  - Mouton
ER  -