Vol. 10 No. 1 (1962)

Papers

• The effect of soil pH, stable manure and fertilizer nitrogen on the growth of red clover and of red clover associations with perennial ryegrass.

  K. Dilz, E.G. Mulder

  1-22

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• Random variation and the interpretation of biological response curves

  S.H. Justesen, P.M.L. Tammes

  23-26

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• Rural extension in a developing country; a comparative study.

  J.M.A. Penders

  27-51

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• The activity of the intestinal wall of the cow in sodium homeostasis.

  J.A. Renkema, G.. Tatsudo Senshu, D.E. Blanche, E. Brouwer

  52-57

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• On the calciumcarbonate content of young marine sediments

  B. Verhoeven

  58-71

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• The ejido-system in Mexico; some observations.

  R.A.L. Lincklaen Arriens

  72-89

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