|aA brief introduction to the Great Lakes, describing how they were formed, the plants and animals found there, how people use the Great Lakes, and efforts to keep them clean.
521
1
|aAges: 5-7.
651
0
|aGreat Lakes (North America)|vJuvenile literature.
651
0
|aGreat Lakes Region (North America)|vJuvenile literature.
651
0
|aGreat Lakes Region (North America)|xGeography|vJuvenile literature.
A brief introduction to the Great Lakes, describinghow they were formed, the plants and animals found there, how people use the Great Lakes, and efforts to keep them clean.
???zh_TW.webpac.bookDescSource???:三民網路書店