TY  - BOOK
AU  - Blalock Hubert M
TI  - Theory construction :  From verbal to mathematical formulations
T2  - Prentice Hall methods of social science series ed by Herbert L Costner and Neil Smelser
U1  - Y:(B), K9(PD) 
PY  - 1969///
CY  - Englewood
PB  - Cliffs Prentice Hall     
KW  - SOCIOLOGY
N1  - Appendix p155-177 A theory buildings and the statistical concept of interaction B- Some elementary calculus
ER  -