000 004130000a22001570004500
245 _aMine openings : stability and support
100 _aAldorf, Josef
100 _aExner, Karel
260 _aAmsterdam
_bElsevier
_c1986
300 _aix, 392p. : ill., photos.
440 _aDevelopment in geotechnical engineering ; 40
020 _a0444995250
080 _a622.22
_bA4
041 _aEN
942 _cBK
999 _c120381
_d120381