TY  - BOOK
AU  - Frank Ayres
TI  - Theory and problems of differential equations
U1  - 517.38 
PY  - 1952///
CY  - New York
PB  - Schaums Publishing Co
N1  - Frank Ayres: Theory and problems of differential equations.  New York.  Schaums Publishing Co, 1952.--(517.38AYR)
ER  -