TY  - GEN
AU  - Sarna,C.S.
AU  - Gupta, R,G
AU  - Garg,P.K.
TI  - Textbook of Mathematics: class XII, part B 
SN  - 817063119X
U1  - 510 23 ed.
PY  - 2021///
CY  - New Delhi
PB  - Arya Book Depot
KW  -  Mathematics
KW  - Study and teaching (Higher secondary)
KW  - Mathematics
KW  - Trigonometry
ER  -