000 00321nam a2200133Ia 4500
001 44708
008 220811s1994 ###||||g |||| ||spa d
082 _a612.6
_bR436R
100 _aRestrepo R., Luis Carlos
_985547
245 0 _aReciprocidad
264 _c1994
942 _cBK
_2ddc
035 _a612.6 -R436R-Reciprocidad-
999 _c66657
_d66657