000 00342nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a408011734
082 _a624
082 _b151 GR
100 _aBell F G Ed.
245 0 _aGround Engineer`s Refere
260 _aLondon
260 _bButterworths
260 _c1987
300 _a59/20
999 _c33126
_d33126