na INLIS000000000002752 Ind 0010-1118002752 Experiences with reduced tillage in the Netherlands OWERKERK, C. van C. van Ouwerkerk Br.631.5(492)OUWe In : K. Bouwer and W Ehlers (eds) energy saving by reduced soil tillage ..., Luxemburgh office of official publication of the European Communities (1989) : p .41-54. bibl. p. 52-54 631.51(492) TILLAGE NETHERLANDS mfn-4434