00819nam0-22002891i-450-99000649572040332120001010000649572FED01000649572(Aleph)000649572FED0100064957220001010d--------km-y0itay50------baitay-------001yy<<La >>SECHERESSE en zone SahelienneCauses- ConsequencesEtudes des measures a prendreParisLa Documentation francaise1975.75 p. 30 cmNotes et études documentaires551.57ITUNINARICAUNIMARCBK990006495720403321XIV E 176216322FSPBCFSPBCSECHERESSE en zone Sahelienne654391UNINAGEN01