Soil strength and crop emergence in direct drilled and ploughed cereal seedbeds in seven field experiments /
Ball, Bruce(Soil scientist)
O'Sullivan, M. F.(Michael F.)
[Oxford] : Blackwell Scientific Publications,
c1982.
Caption title.
In: Journal of Soil Science, 1982, 33 (4).
Includes bibliography (p. 621-622).
Photocopy.