MAB development of arid and semiarid lands: obstacles and prospects
U.N.E.S.C.O.
MAB development of arid and semiarid lands: obstacles and prospects - Paris UNESCO 1977 - 41
Deser,Arid,Semi Arid Semiarid Lands
574.5265
MAB development of arid and semiarid lands: obstacles and prospects - Paris UNESCO 1977 - 41
Deser,Arid,Semi Arid Semiarid Lands
574.5265