En este libro, el autor propone una clasificacion de las ciencias segun su objeto de estudio y su metodo de investigacion. La obra se centra en la diferencia entre las ciencias abstractas y las ciencias concretas, asi como la importancia de una metodologia cientifica rigurosa. Este libro puede ser de interes para estudiosos de la epistemologia y la filosofia de la ciencia.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.