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61
water transmission properties of some soils in the upper Pampanga River basin [microform]
Published 1977Visual Material -
62
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63
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64
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65
Varietal response to different levels of soil moisture tension in upland rice [microform].
Published 1977Visual Material -
66
Interaction between soil moisture regime and nitrogen level in upland rice [microform].
Published 1977Visual Material -
67
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68
A correlation between the liquid limit and the fall-cone penetration [microform]
Published 1977Visual Material -
69
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70


