000
00245nam a2200109Ia 4500
008
220201s1991 xx 000 0 eng d
100
_a
NARANG B S
245
0
_a
MATERIAL SCIENCE
260
_a
DELHI
_b
CBS PUB
_c
1991
300
_a
355
942
_2
ddc
999
_c
91130
_d
91130