RT Journal Article SR Electronic T1 Soil, Nutrition, and Health JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 90 OP 96 VO 6 IS Suppl 2 A1 Lady Eve Balfour YR 1963 UL http://bjgp.org/content/6/Suppl_2/90.abstract AB