TY  - BOOK
AU  - Leopold, Richard W. 
AU  - Link, Arthur S. 
TI  - Problems in American history / 
U1  - 917.303 
PY  - 1957///.
CY  - Prentice-Hall, 
PB  - Englewood Cliffs : 
KW  - United States -- History -- Sources.
KW  - United States
ER  -