The clod populations and potato yields following four post-ploughing cultivation treatments on a clay loam /
Campbell, D. J.(Duncan Joan),author.
National Institute of Agricultural Engineering (Great Britain).Scottish Station.
Unbound.
"Not for publication."--stamped on cover leaf.
"Confidential" on the cover has been crossed out, initialled and dated 19 February, 1981.
Report dated December 1974.
Includes bibliographical references (page 4).
Soil texture.
Loam soils.
Potatoes