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RESPONSE OF SOYBEANS TO LIMING AS RELATED TO SOIL ACIDITY, AL AND MN TOXICITIES, AND P IN SOME OXISOLS OF BRAZIL = LA REPONSE DU SOJA AU CHAULAGE EN RELATION AVEC L'ACIDITE DU SOL, LA TOXICITE DE L'ALUMINIUM ET DU MANGANESE AINSI QU'AVEC LE PHOSPHORE DANS QUELQUES OXYSOLS DU BRESILMARTINI JA; KOCHHANN RA; SIQUEIRA OJ et al.1974; SOIL SCI. SOC. AMER., PROC.; U.S.A.; DA. 1974; VOL. 38; NO 4; PP. 616-620; BIBL. 15 REF.Article