Emmel, Thomas C. <br/><br/>
An introduction to ecology and population biology 
Thomas C. Emmel 
 - New York  W.W. Norton & Company  1973 
 - 196 p.  il. n.  21 cm 
<br/><br/><label>ISBN: </label>0393063933 
<br/><br/><label>Subjects--Index Terms: </label>Biologia Ecologia de las poblaciones