Usher, M.B. <br/><br/>
Biological management and conservation  ecological theory, application and planning 
M.B. Usher 
 - London  Chapman and Hall  c1973 
 - xiii, 394p.:  plates, figs. ;  24cm 
<br/><br/> Appendices, bibliography and index at the end 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Adaptation (Biology)
<br/><br/><label>Dewey Class. No.: </label>577/U85b