TY  - BOOK
AU  - SWANSON,C.A.
TI  - Comparison and Oscyllation Theory of Linear Differential Equations
PY  - 1968///
CY  - Nowy Jork
PB  - Academic Press
UR  - http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=11886
ER  -