000 00227nam a2200073 4500
080 _a
_b
245 _aBS-1540 - 1949; Moulded Electrical Insulating Materials for use at Radio Frequencies
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1949
300 _a45p
999 _c24668
_d24668