TY  - BOOK
AU  - Leff,Gordon
TI  - History and social theory
AV  - D16 .L4
U1  - ARCH YNDC 901 L493H  
PY  - 1969///
CY  - London
PB  - Merlin Press 
KW  - History
KW  - Methodology
KW  - Research
N1  - Includes bibliographical references
ER  -