000
00278nam a2200121Ia 4500
008
220201s1985 xx 000 0 eng d
082
_a
540
_b
AGG
100
_a
Aggarwal,OP
245
0
_a
Engineering chemistry
260
_b
Khanna publisher
_c
1985
300
_a
852
942
_2
ddc
999
_c
83358
_d
83358