Vol. 17 No. 1 (1969)

Papers

• On evaluating applied water balance research

  Ph.Th. Stol

  3-13

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• The aggregate supply functions of US agriculture 1910-1965.

  P.C. van den Noort

  14-19

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• Farm mechanization and soil structure.

  C. van Ouwerkerk

  20-26

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• Influence of supplemented animal fats upon digestibility of ration components by ruminants.

  N.D. Dijkstra

  27-40

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• On measuring properties of soils by thermal methods with special reference to the contact method.

  C.J. Stigter

  41-49

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• Effects of temperature and water-regime on the emergence and yield of tomatoes.

  A.T. Abdelhafeez, K. Verkerk

  50-59

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• Observations on the rate of flow of digesta through the duodenum of sheep and on the recovery of polyethylene glycol and chromium sesquioxide from duodenal contents.

  A.T. van 't Klooster, P.A.M. Rogers, H.R. Sharma

  60-70

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• Measuring thermal conductivity of soils under laboratory conditions.

  A.I. Golovanov

  71-79

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