TY  - BOOK
AU  - Leopold,Richard William
AU  - Link,Arthur S.
TI  - Problems in American history
T2  - Prentice-Hall history series
U1  - 973 
PY  - 1955///]
CY  - New York
PB  - Prentice-Hall
KW  - United States
KW  - History
KW  - Sources
ER  -