Wagner, Frederic H., <br/><br/>
Yellowstone's destabilized ecosystem :  elk effects, science, and policy conflict / 
Frederic H. Wagner ; with contributions by Wayne L. Hamilton and Richard B. Keigley 
 - xiv, 371 páginas :  ilustraciones, mapas 
<br/><br/><label>ISBN: </label>0195148215 (encuadernado en tela : papel alcalino) 9780195148213 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecología--Historia--Parque Nacional Yellowstone (Wyoming, Montana e Idaho)
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Parque Nacional Yellowstone (Wyoming, Montana e Idaho)--Historia
<br/><br/><label>LC Class. No.: </label>QH105.W96  / W34 
<br/><br/><label>Dewey Class. No.: </label>577/.09787/52