000 00222nam a2200073 4500
080 _a
_b
245 _aBS-1991 (Part 1) - 1954; Letter Symbols, Signs and Abbreviations Part 1 General
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1954
300 _a45p
999 _c24705
_d24705