TY  - BOOK
AU  - Petrjanov-Sokolov, I. V.
AU  - Trifonov, D. N.
TI  - Elementary order
T2  - From scientists
PY  - 1984///
CY  - M.
PB  - Mir
KW  - Москва
KW  - Дл215
KW  - rubbk
ER  -