Dòng Nội dung
1
Exploring our world, past and present / Charles F. Gritzner.
Lexington, Mass. : D.C. Heath, 1991
xii, 659 p : col. ill., col. maps ; 26 cm.
2
Exploring our world, past and present : teacher s edition / Charles F. Gritzner.
Lexington, Mass. : D.C. Heath, 1991
various pagings : col. ill., col. maps ; 30 cm.