TY  - BOOK
AU  - Calvert,Peter
TI  - The Concept of class: a historical introduction 
SN  - 0-09-146670-9
U1  - 305.501335.411 21E
PY  - 1982///
CY  - London
PB  - Hutchinson
N1  - Index; Bibliogr. p. 217-230
ER  -