TY  - BOOK
AU  - Aitchison, P.J.
TI  -  The land resources of  North East Nigeria vollume 1: the environ ment ( with an introduction  to volumes  1 - 5 by the editor , P. Tuley ) 
U1  - 333.73  22
PY  - 1972///
CY  - England
PB  - Land  Resource  Division
KW  - Land resources
N1  - Includes bibliographical references (p.175-182)
ER  -