TY  - BOOK
A2  - by Fritz Machlup.
AU  - Machlup, Fritz
KW  - Wiedza i erudycja Stany Zjednoczone.
NV  - 416 s. ;
PY  - 1972
SN  - 0691003564
SN  - 0691086087
TI  - The production and distribution of knowledge in the United States /
ER  -