Desertification: Its causes and conserquences
TOLBA, Mostafa K.
Desertification: Its causes and conserquences - New York PERGAMON PRESS 1977 - 448 p.
0-08-022033-9
DESERTIFICACION
CAUSAS
CONSECUENCIAS
631.45 TOL
Desertification: Its causes and conserquences - New York PERGAMON PRESS 1977 - 448 p.
0-08-022033-9
DESERTIFICACION
CAUSAS
CONSECUENCIAS
631.45 TOL