00374nam a2200157Ia 45000010006000000050017000060080041000230410008000640820017000721000029000892450040001182600009001583000033001676500008002006540008002081320520260306163036.0260306t1957||||xx |||||||||||||| ||spa|| aESP a001.42bB139 aBeveridge, W. I. B.eAUT 4aThe art of scientific investigation c1957 axii, 178 páginas :c23 cm. aGEN aCCC