000 00267nam a2200121 a 4500
003 EIA
001 2043
942 _02
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245 _aLa tierra :
_bestructura y dinĂ¡mica
260 _c1987
008 141112s1987 ck r 000 u spa d
082 _a551.1
_bS26
999 _c8400
_d8400