TY  - BOOK
AU  - ZAITSEV, V. V.
AU  - RYZHKOV, V. V. 
AU  - SKANAVI, M. I. 
TI  - Elementary mathematics : : A REVIEW COURSE / 
AV  - QA139 .E4 1968
U1  - 372.72 
PY  - 1978///
CY  - MOSCOW : 
PB  - MIR, 
KW  - Arithmetic
KW  - Problems, exercises, etc
ER  -