TY  - BOOK
AU  - Symposium on nizamiah observatory on binary & multiple systems( Hyderabad,1983)
AU  - Abhyankar,K.D.,ed.
AU  - Ballabh,G.M.,ed.
TI  - Binary and multiple systems
U1  - 523.841 
PY  - 1984///
CY  - Hyderabad
PB  - Osmania University
ER  -