000 00312nam a2200133Ia 4500
008 231017s9999 xx 000 0 und d
082 _a551.307
082 _bPIE
245 0 _aRockfall Hazard Classification and Mitigation System
245 0 _cUS Dept
260 _bUS Dept
300 _c30cm
942 _cREP
999 _c604251
_d604251