A comparison of four ridging implements on the ridge profile, clod and potato yield in 0.91 m ridges, 1983 /
Sharp, M. J.(Agricultural engineer),author.
MacIntyre, D.(Duncan),-2015,author.
Scottish Institute of Agricultural Engineering.
"Not for publication."--title-page.
"Scottish Institute of Agricultural Engineering."--at the head of the cover.
Report dated December 1983.
Includes bibliographical references (pages 8-9).
Potatoes