000 00632nam a2200169 a 4500
005 20150716140948.0
020 _a0-7614-0898-3
100 _aKatz, Sharon
245 _aThe Great Lakes /
_cby Sharon Katz.
260 _aTarrytown, NY :
_bBenchmark Books,
_c1999.
300 _ap. cm.
440 _aEcosystems of North America
520 _aSummary: Describes the formation of the Great Lakes, the varied life forms that are part of this ecosystem, the interactions among the plants and animals that live there, and threats to this environment.
650 _aEcology
_xGreat Lakes
650 _aFreshwater ecology
942 _c UKN
999 _c76726
_d76726