TY  - BOOK
AU  - Friedman,Yona
TI  - About critical groupsize
SN  - 9280801317
AV  - IRA HB74.5.F82 
PY  - 1980///
CY  - Tokyo
PB  - United Nations University
KW  - Critical groupsize
KW  - Social life,
KW  - gropu size
ER  -