TY  - BOOK
AU  - Popper,Karl Raimund
ED  - Clarendon Press
TI  - Objective knowledge: an evolutionary approach 
SN  - 0198750242
U1  - 121.4  22
PY  - 1975///.
CY  - Oxford: 
PB  - Clarendon Press, 
KW  - Objectivity
KW  - Αντικειμενικότητα
N1  - Includes bibliographical references and index
ER  -