Ecological biology :  for A-level and intermediate students in Africa / 
editors, D. W. Ewer, J. B. Hall ; contributors G. C. Clerk ... [et al.]. 
 - London :  Longman,  1972- 
 - v. :  ill. ; 
<br/><br/><label>ISBN: </label>0582609429 (v. 1) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Juvenile literature.<br/>Biology--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>QH541.14  / .E23 
<br/><br/><label>Dewey Class. No.: </label>