TY  - BOOK
AU  - Chugh; Om.P.,Gupta;S.P.,Yadav;C.S.,Bhutani;O.P.
TI  - Topics in mathematics
U1  - 516 C471T 
PY  - 1989///
CY  - New Delhi
PB  - Laxmi publication
KW  - Mathematics
ER  -