TY  - BOOK
AU  - Giacaglia, G.E.O.
TI  - Perturbation methods in non-linear systems
T2  - Applied mathematical science
SN  - 0045100497
U1  - 515.35, 
PY  - 1972///
CY  - LoNew Delhion
PB  - George Allen & Unwin
ER  -