TY  - BOOK
AU  - Nielsen,Kaj L.
TI  - Differential equations / 
SN  - 0064600726
U1  - 515.35 
PY  - 1962///
CY  - New York
PB  - Barnes & Noble, 
KW  - Mathematics
KW  - Differential equations
N1  - Includes index
ER  -