00593nam a2200229Ia 4500001000700000003000500007005001700012008004100029010001800070020001500088041001300103050002300116082001200139245003400151260005800185300002200243500002200265650001900287650001900306650001900325650001900344204518BIBL20160527193637.0911030m19921985sp a   j e    00100 spa    abuc91004883    a84752524350 aspaheng00aQH303.6b.C65 199200a50021900aComo funciona la naturaleza .  aMadridbEditorial Debate; Circulo de lectorescc1992.  a360 p.bcol. ill.  aIncludes indexes. 1aScience2Local 1aGeology2Local 1aZoology2Local 1aBiology2Local