000 00308nam a2200085 4500
080 _a
_b
245 _aIEC: 61241-3, Ed.1-1997; Electrical apparatus for use in the presence of combustible dust- Part 3: Classification of areas where combustible dusts are or may be present.
100 _aI.E.C.
250 _a1st
260 _aGeneva
_bIEC
_c1997
300 _a41
999 _c37269
_d37269