Margulis, Lynn, 1938- <br/><br/>
Symbiosis in cell evolution  life and its environment on the early Earth/ 
Lynn Margulis 
 - San Francisco  W. H. Freeman  1981 
 - 419p. ;   24cm 
<br/><br/>Includes index Bibliography: p.365-392 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cells--Evolution<br/>Life--Origin<br/>Symbiosis