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Lista de regiones - Estados Unidos - Historia natural – Ciencias
- Alaska 1
- Arizona 1
- Californie 2
- Colorado 1
- Dakota Du Sud 2
- Floride 1
- Hawaï 1
- Louisiane 3
- Massachusetts 1
- Missouri 1
- Montana 1
- New Hampshire 1
- New York 1
- Utah 2
- Wisconsin 1
- Alabama 0
- American Samoa 0
- Arkansas 0
- Caroline Du Nord 0
- Caroline Du Sud 0
- Connecticut 0
- Dakota Du Nord 0
- Delaware 0
- Géorgie 0
- Idaho 0
- Illinois 0
- Indiana 0
- Iowa 0
- Kansas 0
- Kentucky 0
- Maine 0
- Maryland 0
- Michigan 0
- Minnesota 0
- Mississippi 0
- Nebraska 0
- Nevada 0
- New Jersey 0
- Nouveau-Mexique 0
- Ohio 0
- Oklahoma 0
- Oregon 0
- Pennsylvanie 0
- Rhode Island 0
- Tennessee 0
- Texas 0
- Us Virgin Islands 0
- Vermont 0
- Virginie 0
- Virginie-Occidentale 0
- Washington 0
- Washington Dc 0
- Wyoming 0