TY  - BOOK
AU  - Kells,Lyman M.
ED  - McGraw-Hill Publishing Company.
TI  - Elementary differential equations
PY  - 1947///
CY  - New York, London
PB  - McGraw-Hill Book Company
KW  - Równania różniczkowe
KW  - kaba
N1  - Indeks
UR  - http://www.wbc.poznan.pl/publication/504732
ER  -