000 00237nam a2200073 4500
080 _a
_b
245 _aIS: 1885 (Part 72) - 1993/IEC 50 (101) - 1977; Electrotechnical vocabulary Part 72 mathematics
700 _aBureau of Indian Standards
260 _aNew Delhi
_bBIS
_c1993
300 _a10p
999 _c35100
_d35100