000
00375nam a2200181Ia 4500
008
140910s9999 xx 000 0 und d
082
_a
620
082
_b
IMP - N
100
_a
Impact Learning Material Series
245
_a
Noise
260
_a
New Delhi
260
_b
Iitd
260
_c
1997
300
_a
19p
650
_a
GENERAL
942
_2
DDC
942
_c
Book
999
_c
13892
_d
13892