TY  - BOOK
AU  - Beskin, N. M.
TI  - Dividing a segment in a given ratio
T2  - Little mathemaitics libr
PY  - 1983///
CY  - Μ.
PB  - Mir
KW  - Мт-695(Полул)[В181.114.9я9]
KW  - rubbk
ER  -