TY  - BOOK
AU  - Pacheco De Figueiredo, Rui
TI  - CONTRIBUTION TO THE THEORY OF CERTAIN NON-LINEAR DIFFERENTIAL EQUATIONS
U1  - 517.38 
PY  - 1960///
CY  - Lisboa
PB  - Junta De Investigacoes Do Ultramar
KW  - Equations, Differential
ER  -