Lean, Geoffrey. <br/><br/>
Gerçekçi yaklaşım / 
by Geoffrey Lean. 
 - 3rd ed. 
 - İstanbul :  TEMA,  n.d. 
 - 39 p. : ;  20 cm. 
<br/><br/> This book is in Turkish. 
<br/><br/><label>ISBN: </label>975716917X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Erosion.