RT Journal Article SR Electronic T1 The accuracy of haemoglobin determinations with the Spencer haemoglobinometer. JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 251 OP 252 VO 12 IS 2 A1 G. Discombe A1 A. J. Goddard A1 I. D. Hill YR 1966 UL http://bjgp.org/content/12/2/251.abstract AB