TY  - BOOK
AU  - Polsby, Nelson W
TI  - How Congress evolves : social bases of institutional change
SN  - 9780195182965
U1  - 328.73072 POL 
PY  - 2004///
CY  - Oxford
PB  - Oxford University Press
KW  - United States. Congress. House - History - 20th century
N1  - Includes bibliographical references (p. 171-250) and index
ER  -