TY  - BOOK
AU  - Martin Hillman
TI  - Bridging a continent
T2  - Aldus encyclopedia of discovery and exploration
U1  - 970.01 H645b 
PY  - 1971///
CY  - London
PB  - Aldus
KW  -   West (U.S.) -- Discovery and exploration -- Juvenile literature.
KW  -  Discoveries in geography
KW  - West United States
N2  - 	
	
Covers the topics of westward expansion, fur trading, and the discovery of California
ER  -