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100 0 0 _aRojas, Basilio A.
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245 1 4 _aThe analysis of tillage experiments ; final report
260 _aAmes :
_bIowa State College. Statistical Laboratory,
_c(1950)
300 _a123 h.
490 0 _aAgricultural Experiment Station Project
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590 _aBATCH-UPD
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590 _aCONVERSION
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650 1 4 _aDiseƱos experimentales.
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650 1 4 _aLabranza.
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830 0 _aAgricultural Experiment Station Project
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901 _aBK
942 _cLIBRO
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