TY  - BOOK
AU  - Keith
TI  - The analysis of social mobility: Methods and approaches 
T2  - Oxford, studies in social movility working papers
AV  - HT609 A53
PY  - 1972///
CY  - Oxford
PB  - Clarendon Press
KW  - Movilidad social
KW  - Sociología
KW  - Investigación
ER  -