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040 _cCHAP
090 _aR-785
100 0 0 _aKellogg, Charles E.
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245 _aModern soil science
500 _aSobretiro de : Smithsonian Report for 1949 pp. 227-246, 1950
590 _aBATCH-UPD
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590 _aCONVERSION
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650 1 4 _aSuelos.
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