00686nam a22001937a 450000500170000000800410001702000150005802000180007304000530009104100080014410000220015224500900017426000810026430000230034565000230036865000400039165000410043170000200047220190111080934.0130821s1989 xxu gr eng a0822959267 a9780822959267 aCo-BoUCMbspacSaul Niño (Modificó)d[Nuevo]00aeng1 aSalmon, Wesley C.10aFour decades of scientific explanationcWesley C. Salmon ; foreword by Paul Humphreys aMinneapolis (Minnesota, Estados Unidos)bUniversity of Minnesota Pressc1989 axiv, 234 páginas04aCiencias naturales04aFilosofía de la cienciaxHistoria04aMetodología científicaxHistoria10aHumphreys, Paul