000 00262nam a2200109 a 4500
003 EIA
001 9163
942 _02
_2ddc
_cBK
245 _aRiesgos ecológicos :
_b¿Una amenaza evitable?
008 141112s2003 ck r 000 u spa d
082 _a574.526
_bL332
999 _c12104
_d12104