TY  - BOOK
AU  - Dlugolensky, Yakov.
AU  - Kulkov, Vladimir.
AU  - Raissa Bobrova,
TI  - Clocks and Watches (Translated)
U1  - 510 
PY  - 1982///
PB  - Progress publishers Moscow
KW  - Clocks
KW  - Mathematics
KW  - Russian Literature-Translated
KW  - Time
KW  - Watches
ER  -