000 00248nam a2200073 4500
080 _a
_b
245 _aIS:3842 (Part IV) - 1966 : Application Guide for Electrical Relays for ac Systems Part 4 Thermal Relays
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1967
300 _a24p
999 _c26622
_d26622