000 00270nam a2200121 a 4500
003 EIA
001 6134
942 _02
_2ddc
_cBK
245 _aManual de laboratorio hola quĂ­mica
260 _cc1987
008 141112s1987 ck r 000 u spa d
082 _a542.1
_bR436ma
999 _c9169
_d9169