000 00260nam a2200109Ia 4500
008 230320s9999||||xx |||||||||||||| ||spa||
082 _aR/505/S18/98
100 _aEhrlich, P.R. ; Ehrlich, A.H.
245 0 _aExtincion (I)
260 _bSalvat
942 _898
_cLIB
999 _c23452
_d23452