TY  - BOOK
AU  - Yakovlev,G N
TI  - High-school mathematics
U1  - 373.5:51 
PY  - 1982///
CY  - Moscow
PB  - Mir Publishers
KW  - mathematics
KW  - trigonometric equations
N1  - part two 
translated from the Russian by Irene Aleksanova
ER  -