TY  - BOOK
AU  - FRANK (Ayres)
TI  - Theory and problems of differential equations
U1  - 513/3 
PY  - 1952///
CY  - New York
PB  - Schaum Publishing Co
KW  - Theory
KW  - problems
KW  - of
KW  - equations
KW  - differential
KW  - and
ER  -