TY  - BOOK
AU  - Demkovič, V. P.
TI  - Physics problems for secondary schools
PY  - 1965///
CY  - Μ.
PB  - "Prosveshcheniye"
KW  - Фз-0(рук.ср.шк.)[В3я721-4]
KW  - rubbk
ER  -