1. W. L. Balls. ‘Studies in Quality in Cotton’, Macmillan, London, 1928.
2. G. A. R. Foster.Shirley Inst. Mem.1944, 19, 169; orJ. Text. Inst.1945, 36, T229.
3. Idem. Shirley Inst. Mem.1951, 25, 51 ; orJ. Text. Inst.1951, 42, T335.
4. Idemand J. G. Martindale.Shirley Inst. Mem.1944, 19, 210 ; orJ. Text. Inst., 1946,37, T1.
5. S. L. Anderson, B. Cavaney, G. A. R. Foster, and J. R. Womersley.Shirley Inst. Mem.1945, 19, 183; orJ. Text. Inst.1945, 36, T253.