Penetrometer investigation of a sample of Red Craigs Royal early potatoes /
Carruthers, J.(John)(Agricultural engineer),author.
National Institute of Agricultural Engineering (Great Britain).Scottish Station.
Unbound.
"SSN/42."--cover leaf.
"Not for  publication."--stamped on cover leaf.
Report dated November 1969.
Includes bibliographical references (leaf 1).
Potatoes