Register of potato crops certified [in the current year]: comprising stocks graded 'V.T.S.(Scot.)', V.T.S.(Scot.) N.I', 'F.S.(Scot.)', 'F.S.(Scot.) N.I.', S.S.(Scot)', 'S.S. (Scot.) N.I.', 'A(Scot)' a. ISBN 0114903018. Published by H.M.S.O in 1969. Publication and catalogue information, links to buy online and reader comments.