000
00241nam a2200097Ia 4500
008
220201s9999 xx 000 0 eng d
100
_a
GAUR (RK) & GUPTA (SL)
245
0
_a
ENGINEERING PHYSICS
260
_b
DHANPAT RAI NEW DELHI
942
_2
ddc
999
_c
99893
_d
99893