000 00306nam a2200073 4500
080 _a
_b
245 _aISO-1940/1 - 1986; Mechanical vibration - balance quality requirements of rigid rotors Part 1 determination of permissible residual unbalance
700 _aInternational Organization and Standardization
260 _aSwitzerland
_bISO
_c1986
300 _a15p
999 _c33454
_d33454