TY  - BOOK
AU  - North,Alfred
TI  - An enquiry concerning the principles of natural knowledge
SN  - 0486243435
U1  - 501 
CY  - New York, USA: 
PB  - Library of congress catoging in piblication data, 1982
KW  - INVESTIGACIÓN
N1  - Bibliografía: p; All that one can hope to do is to settle right sort of difficulties, and to raise the righy sort of ulterior questions, and thus to accomplish one short step furteher into infathomable mystery; Ingeniería Ambiental; Ciencias Agrícolas y Ambientales
ER  -