00381nam a2200157Ia 4500001000500000005001700005008004100022041000800063082001700071100003300088245004300121260000900164300003400173650000800207654000800215361320260306145656.0260306t1999||||xx |||||||||||||| ||spa|| aESP a300.072bB11 aBabbie, Earl [1938-...]eAUT 0aFundamentos de la investigacion social c1999 axxii, 473 páginas :c26 cm. aGEN aCHU