TY  - BOOK
AU  - Nair, Sunita.
TI  - Some problems in gravitational lensing:a thesis submitted to the University of Bombay for the degree of Ph. D. in physics
U1  - 520/525(043.2) NAI 
PY  - 1993///
PB  - Tata Institute Of Fundamental Research
KW  - Thesis
ER  -