TY  - BOOK
AU  - Singal, Ashok Kumar.
TI  - Lunar occultation observations & a  study of cosmic size evolution of  extragalactic radio sources :Ph. D. Thesis
U1  - 520/525(043.2) SIN 
PY  - 1988///
PB  - Tata Institute of Fundamental Research, Radio Astronomy Cent
KW  - Thesis
ER  -