TY  - BOOK
AU  - Bierens de Haan,D.
TI  - Guiding principles of activity,based on the application of scientific method: what sociologists should know for the radical improvement of the life of man 
U1  - 901.9 
PY  - 1958///
CY  - Leiden
PB  - E. J. Brill
KW  - Civilization
KW  - Philosophy
ER  -