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41
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42
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43
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44
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45
The effect of previous crop on the performance of succeeding crops [microform].
Published 1977Visual Material -
46
Effects of crop rotation and straw management on yield and agronomic characters of rice in a heavy clay soil [microform]
Published 1977Visual Material -
47
Theory and rational design of rotating biological filters I. Oxygen transfer and utilization
Published 1976Analytics -
48
Theory and rational design of rotating biological filters. II. Substrates and nitrogen conversion
Published 1976Analytics -
49
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