TY  - GEN
AU  - De Voto, Bernard Augustine, 1897-1955.
TI  - The course of empire; with maps by Erwin Raisz
AV  - E 179.5 .D4 
PY  - 1952///
CY  - BOSTON
PB  - HOUGHTON MIFFIN COMPANY 
KW  - United States--Territorial expansion
KW  - s" (p. 561-631)
KW  - North America--Description and exploration
N1  - Bibliographical references included in "
ER  -