000 00447nam a22001697a 4500
001 23507
008 190110s1924 enk||||| |||| 00| 0 eng d
041 _aeng
080 _aA/622.42/H13
100 _936920
_aHaddock, M.H.
245 _aMine ventilation and ventilators
260 _aLondon
_bCharles Griffin and Company
_c1924
300 _a337 p.
_bilus.
650 _93200
_aVENTILACION DE MINAS
910 _aRNUĂ‘EZ
_b38868
942 _2z
_cLIBR
999 _c23507
_d23507