00413nam a2200157Ia 45000010006000000050017000060080041000230410008000640820016000721000031000882450078001192600009001973000033002066500008002396540008002471341920260306164800.0260306t2011||||xx |||||||||||||| ||spa|| aESP a004.04bB15 aBaeza-Yates, Ricardo,eAUT 0aModern information retrieval :bthe concepts and technology behind search c2011 axxx, 913 páginas :c24 cm. aGEN aCCC