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Yield, gram quality and economics of some spring wheat cropping systems in the Brown soil zone. An 18 year study
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Zentner, R.P., and Campbell, C.A.: 1988, 'Yield, gram quality and economics of some spring wheat cropping systems in the Brown soil zone. An 18 year study', Can. J. Plant Sci. 68, 1-21.
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(1988)
Can. J. Plant Sci.
, vol.68
, pp. 1-21
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Zentner, R.P.1
Campbell, C.A.2
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