[외서]
English Explorers Social Studies Level 3-03 : Native Americans of the Plains : The Lakota (Book+CD+Workbook)
[ Paperback, Audio CD + Workbook 포함 ]
[외서]
English Explorers Social Studies Level 2-03 : Native American of the Southwest : The Navajo (Book+CD+Workbook)
[ Paperback, Audio CD + Workbook 포함 ]
[외서]
English Explorers Social Studies Level 1-15 : Discover A Gold Rush Community, San Francisco (Book+CD+Workbook)
[ Paperback, Audio CD + Workbook 포함 ]