Liquid limit determination of arable topsoils using a drop-cone penetrometer /
Campbell, D. J.(Duncan Joan),author.
National Institute of Agricultural Engineering (Great Britain).Scottish Station.
Unbound.
"Not for publication."--stamped on front cover.
Report dated April 1974.
Library copy is a photocopy of the original.
Includes bibliographical references (leaf 3).
Soils
Penetrometers.