000 00231nam a2200073 4500
080 _a
_b
245 _aISO: 6506 - 1981; Metallic materials - hardness test - brinell test
700 _aInternational Organization for Standardization
260 _aSwitzerland
_bISO
_c1981
300 _a4p
999 _c34824
_d34824