TY  - BOOK
AU  - Helgren, David M.
AU  - Robert J. Sager
TI  - People, places and change : an introduction to world studies
SN  - 0030376432
AV  - E178 .P46
PY  - 2005///
CY  - Austin
PB  - A Harcourt Education company
KW  - World-history
ER  -