TY  - BOOK
AU  - Merritt Richard L
AU  -  Rokkan Stein Ed.
TI  - Comparing nations :  The use of quantitative data i   
U1  - Y:(B), K8 
PY  - 1968///
CY  - New Haven 
PB  - Yale University Press       
KW  - Sociometry
N1  - Bibiliography P 561-70
ER  -