RT Journal Article SR Electronic T1 Haemoglobin levels among an industrial population. JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 352 OP 357 VO 15 IS 5 A1 R. H. Morgan YR 1968 UL http://bjgp.org/content/15/5/352.abstract AB